Algebra 1, Unit 4 Practice

Finding x with +/-

100

x + 3 = 12

x = 9

200

14 + x = 12

x = -2

300

12 - x = 15

x = -3

400

12 - x + 4x = 42

x = 10

500

-14 - 3x = 31

x = -15

Finding x with *

100

1*x=12

x = 12

200

3*x = 15

x = 5

300

-4*x = 16

x = -14

400

32*2x = 128

x = 2

500

x*x*x*2*2 = 108

x = 3

Finding x by distributing

100

x(1+0) = 4

x = 4

200

x(2+1) = 15

x = 5

300

3(x+1) = 9

x = 2

400

5(x+x) = 70

x = 7

500

x(x+10)=-25

x = -5

Multiplying -'s

100

-2 * -4

+8

200

-4 * -12

48

300

-2 * -2 * -2

-8

400

2 * -3 * -3

18

500

-(3*3+3) * -(6*3+6)/2 * (1/12)

12

Integers: +/-

100

4 + 6

10

200

-4 + 10

6

300

-3 - 7

-10

400

-12 - (-16)

4

500

-(-(-12) - (-16))

-28