Page 607 - Basic College Mathematics with Early Integers

Answers
Integrated Review Sections 8.1–8.3

1. Expressions and Equations

For the table below, identify each as an expression or an equation.
2.
Expression or Equation
1. 7x - 5y + 14
3.
2. 7x = 35 + 14
3. 3(x - 2) = 5(x + 1) - 17
4.
4. -9(2x + 1) - 4(x - 2) + 14

5.

Fill in each blank with “simplify” or “solve.”
6.
5. To an expression, we combine any like terms.

7.

6. To an equation, we use the properties of equality to find any value of the
8. variable that makes the equation a true statement.

9.

Evaluate each expression when x =-1 and y = 3.
10. 8y y + x
2
7. y - x 8. 9. 5x + 2y 10.
4x 2x
11.

12. Simplify each expression by combining like terms.

11. 7x + x 12. 6y - 10y
13.

14. 13. 2a + 5a - 9a - 2 14. 3x - y + 4 - 5x + 4y - 11

15.
Multiply and simplify if possible. Copyright 2012 Pearson Education, Inc.

16. 15. -2(4x + 7) 16. -3(2x - 10)

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