8 chap. 3 review

add/subtract equations

100

1.2 + x = 5.7

x = 4.5

200

12.65 + x = 19.22

x = 6.66

300

12 = -9 - x

x = -21

400

x + 4 = 20 - 4²

x = 0

500

x + 1.4 - 2.9 = -6.4

x = -4.9

x/÷ equations

100

-5x = 10

x = -2

200

-45 = -3x

x = 15

300

1/5x = 15

x = 75

400

2/3x = 3/4

x = 9/8 or 1 1/8

500

3/10x = 15

x = 50

2 step equations

100

2x + 17 = 29

x = 6

200

-4x + 9 = -3

x = 3

300

(x + 3)/7 = -2

x = -17

400

5x + 11 - 2x = 17

x = 2

500

-5x - 7 = -5 + 43

x = -9

multi step equations

100

1 + 2(x + 4) = 29

x = 10

200

-2(x - 5) + 4x = -14

x = -12

300

-9(x + 1) = -9

x = 0

400

(x + 9)/3 + 5 = 28

x = 60

500

(5x -2)/4 - 1 = -9

x = -6

multi step equations 2

100

6x + 7 = 8x - 13

x = 10

200

6x + 4 = 4x - 12

x = -8

300

7x + 16 = 3x + 24

x = 2

400

5x - 8 = -2x + 13

x= 3

500

2x + 19 = x + (23)(2)

x = 27