Math 7 Exam

Simplify Expression

100

10x - 4x + 7

6x + 7

200

25y - 17 + 6y

31y - 17

300

2.5c - 3.2c

-0.7c

400

4(2x - 9) + 2

8x - 34

500

8(q + 4) - 2(2q + 6)

4q + 20

Equations

100

10v - 12 = 38

v = 5

200

-16.3 = w + 6.1

w = -22.4

300

9.5x + 23 = -56.3

x = -8.35

400

4=-1/5c

c=-20

500

k/-10=3

k=-30

Inequalities

100

8x+16\le 32

x\le 2

200

4.6c\ge 2.3

1/2

300

-2x+10\le 40

x\ge -15

400

-4x+3x\le 25

x\ge -25

500

-6(x - 8) = 120

x = -12

Sum / Differences

100

2c + 6 + 5c + 12

7c + 18

200

5(c+5)+(4c+5)

9c+30

300

(n+5) - (3-7n)

2+8n

400

9(x+5) - 7(y-3)

9x-7y+66

500

1/3(-12s+12)-1/6(12s+18)

-6s+1

Vocabulary

100

Terms of an algebraic expression that have the same variables raised to some exponents

What are "like terms"?

200

An algebraic expression is in ___ when it has no like terms and no parentheses.

What is "simplest form"?

300

A mathematical sentence that compares expressions; It contains the symbols greater than and less than.

What is "inequality"?

400

Writing an expression as a product of factors.

What is "factoring" an expression?

500

Two equations that have the same solution.

What are "equivalent equations"?