7th Ch. 2 Math Review Y3

2-2 The Distributive Property

100

13(23 + 10)

429

200

Simplify

4(w + 9)

4w + 36

300

Simplify

(2 + 4a)12

48a + 24

400

Simplify

-7(6 - 2m)

14m - 42

2-3 Simplifying Algebraic Expressions

100

Simplify

8a + 7 - 11a

-3a + 7

200

Simplify

6 + x - 4x + 3

-3x + 9

300

Simplify

19 - 4(5n + 1) - 4n

-24n + 15

400

Simplify

-7(2r - 1) + 3(8 - r)

-17r + 31

2-4 Variables and Equations

100

Is the equation true?

47 - 18 = 29

True

200

Does g = 6 solve the equation?

2g + 7 = 30

No

300

Write an equation for the sentence. Is the equation true?

Thirty-two plus five equals the product of six and six

32 + 5 = 6 • 6; false

400

Is 20 a solution to the equation?

(5p)/4+7 = 32

Yes

2-5 & 2-6 Solving Equations

100

Solve the equation.

6 + y = 17

y = 11

200

Solve the equation.

-2 = a - 10

a = 8

300

Solve the equation.

3x = -15

x = -5

400

Solve the equation.

m/-9=3

m = -27

500

Solve the equation.

4x - 13 = 15

x = 7

2-9 & 2-10 Solving Inequalities

100

Solve the inequality

n - 4 > 10

n > 14

200

-5 < k + 7

k > -12

300

Solve the inequality

6s < 18

s < 3

400

Solve the inequality

c/-4> -9

c ≤ 36