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Chapter 2 Review – Beginning Algebra Guidance

Study Guide - Smart Notes

Tailored notes based on your materials, expanded with key definitions, examples, and context.

Q1. Solve for :

Background

Topic: Solving Linear Equations

This question tests your ability to solve a simple linear equation for the variable .

Key Terms and Formulas

  • Linear equation: An equation involving only the first power of the variable.

  • Isolate the variable: Move all terms involving to one side and constants to the other.

Step-by-Step Guidance

  1. Identify the equation:

  2. Subtract $11x$:

  3. Simplify both sides:

    (expression to be calculated)

Try solving on your own before revealing the answer!

Final Answer:

Subtracting $11x = -17$.

Q2. Solve for :

Background

Topic: Solving Linear Equations with Fractions

This question tests your ability to solve a linear equation where the variable is multiplied by a fraction.

Key Terms and Formulas

  • Fractional coefficient: The variable is multiplied by .

  • To isolate , multiply both sides by the reciprocal of , which is $7$.

Step-by-Step Guidance

  1. Identify the equation:

  2. Multiply both sides by $7x$:

  3. Simplify both sides:

    (expression to be calculated)

Try solving on your own before revealing the answer!

Final Answer:

Multiplying both sides by $7x = -56$.

Q3. Solve for :

Background

Topic: Solving Linear Equations

This question tests your ability to solve a linear equation where the variable is multiplied by a constant.

Key Terms and Formulas

  • To isolate , divide both sides by $5$.

Step-by-Step Guidance

  1. Identify the equation:

  2. Divide both sides by $5x$:

  3. Simplify both sides:

    (expression to be calculated)

Try solving on your own before revealing the answer!

Final Answer:

Dividing both sides by $5x = -5$.

Q4. Solve for :

Background

Topic: Solving Linear Equations

This question tests your ability to solve a linear equation with both variable and constant terms.

Key Terms and Formulas

  • To isolate , first add $7.

Step-by-Step Guidance

  1. Identify the equation:

  2. Add $7$ to both sides:

  3. Simplify:

    (expression to be calculated)

  4. Divide both sides by $4x$:

    (expression to be calculated)

Try solving on your own before revealing the answer!

Final Answer:

Adding $7 gives .

Q5. Solve for :

Background

Topic: Solving Linear Equations with Variables on Both Sides

This question tests your ability to solve a linear equation where appears on both sides.

Key Terms and Formulas

  • Move all terms to one side and constants to the other.

Step-by-Step Guidance

  1. Identify the equation:

  2. Subtract from both sides to get all terms on one side:

  3. Simplify:

  4. Add $8$ to both sides:

  5. Simplify:

    (expression to be calculated)

  6. Divide both sides by $3x$:

    (expression to be calculated)

Try solving on your own before revealing the answer!

Final Answer:

After simplifying and dividing, .

Q6. Solve for :

Background

Topic: Solving Linear Equations with Multiple Terms

This question tests your ability to combine like terms and solve for .

Key Terms and Formulas

  • Combine like terms: Add or subtract terms with the same variable or constant.

Step-by-Step Guidance

  1. Identify the equation:

  2. Combine like terms on each side:

    Left: ,

    Right:

    So,

  3. Subtract from both sides:

  4. Simplify:

  5. Add $3$ to both sides:

  6. Simplify:

Try solving on your own before revealing the answer!

Final Answer:

After simplifying, .

Q7. Solve for :

Background

Topic: Solving Linear Equations with Parentheses

This question tests your ability to use the distributive property and solve for .

Key Terms and Formulas

  • Distributive property:

  • Combine like terms after distributing.

Step-by-Step Guidance

  1. Identify the equation:

  2. Apply the distributive property:

    Left: ,

    So,

    Right: ,

    So,

  3. Combine like terms:

    Left: , so

    Right: , so

  4. Set the simplified equation:

  5. Add to both sides:

  6. Simplify:

Try solving on your own before revealing the answer!

Final Answer:

After isolating , .

Q9. Solve for :

Background

Topic: Solving Linear Equations with Fractions

This question tests your ability to solve equations with fractional coefficients and variables on both sides.

Key Terms and Formulas

  • Clear fractions by multiplying both sides by the least common denominator (LCD).

  • Combine like terms and solve for .

Step-by-Step Guidance

  1. Identify the equation:

  2. Find the LCD of $5, which is $20$.

  3. Multiply both sides by $20$ to clear fractions:

  4. Simplify each term:

  5. Expand and combine like terms:

  6. Subtract from both sides:

  7. Simplify:

Try solving on your own before revealing the answer!

Final Answer:

After isolating , .

Q10. Write an expression for: Five less than four times a number.

Background

Topic: Translating Words to Algebraic Expressions

This question tests your ability to convert a verbal phrase into an algebraic expression.

Key Terms and Formulas

  • "Four times a number" means .

  • "Five less than" means subtract $5$ from the previous quantity.

Step-by-Step Guidance

  1. Identify the number as .

  2. Write "four times a number":

  3. Subtract $5 to represent "five less than four times a number":

Try writing the expression on your own before revealing the answer!

Final Answer:

The expression is .

Q11. The sum of half a number and nine is 15. Find the number.

Background

Topic: Translating Words to Equations and Solving

This question tests your ability to write and solve an equation based on a word problem.

Key Terms and Formulas

  • "Half a number" means .

  • "Sum" means addition.

Step-by-Step Guidance

  1. Let the number be .

  2. Write the equation:

  3. Subtract $9$ from both sides:

  4. Simplify:

  5. Multiply both sides by $2x$:

Try solving on your own before revealing the answer!

Final Answer:

Multiplying both sides by $2x = 12$.

Q12. Fill in the blank: $0-1$

Background

Topic: Comparing Numbers

This question tests your understanding of inequalities and the order of numbers.

Key Terms and Formulas

  • Inequality symbols: (less than), (greater than), (equal to)

Step-by-Step Guidance

  1. Compare $0-1$ on the number line.

  2. Recall that $0-1$.

  3. Choose the correct inequality symbol to fill the blank.

Try filling in the blank on your own before revealing the answer!

Final Answer:

$0-1$.

Q13. Fill in the blank: ______ $44$

Background

Topic: Comparing Numbers

This question tests your understanding of inequalities and the order of numbers.

Key Terms and Formulas

  • Inequality symbols: (less than), (greater than), (equal to)

Step-by-Step Guidance

  1. Compare and $44$ on the number line.

  2. Recall that is less than $44$.

  3. Choose the correct inequality symbol to fill the blank.

Try filling in the blank on your own before revealing the answer!

Final Answer:

is less than $44$.

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