Chapter 2 Review

Variables on Both Sides

100

4x + 1 = 2x - 5

x = -3

200

r + 15 = 4r - 6

r = 7

300

3(5y + 1) = 18y

y = 1

400

-7(a - 3) = 11 - 7a

no solution

500

9(n - 4) - 7n = 32 - 3(n + 8)

n = 13

Multistep Equations

100

-4x - 7 - 3x +4 = 25

x = -4

200

-4(7a + 5) = -160

a = 5

300

3k + 2(5k - 3) = 7

k = 1

400

-(6h + 7) + 8 = -19

h = 10/3

500

2(5v + 3) - 4(7v + 1) = -88

v = 5

Absolute Value Equations

100

| x+1| = 6

x = {-7, 5}

200

|6c - 18|=30

x = {-2, 8}

300

|3x + 1| = =5

no solution

400

-4|2w + 6| = -32

w = {-7, 1}

500

5|4x -4| - 9 = 31

x = {-1, 3}

Ratios and Proportions

100

x/4 = 3/2

x = 6

200

2/9 = 4/(x+8

x = 10

300

6/(a-6) = 3/(a-3

a = 0

400

5/(y-7) =3/(y-5

y = 2

500

6/(2n - 5) = 2/(n-7)

n = 16

Literal Equations

100

d = 2r for r

d/2 = r

200

s = (2d)/t for d

(st)/2 = d

300

I = prt for t

I/(pr) = t

400

w = 3x + 7y for y

(w-3x)/7 = y

500

r = 4/3(p-q) for q

4/3 r +q = p