a1 chap. 2

+/- equations

100

x + 24 = 7

x = -17

200

-6.2 = x + 4.8

x = -11

300

x - 6.37 = -1.4

x = 4.97

400

-9 = x - 4 + 16

x = -21

500

-8.7 = x - 16.4 + 6.2

x = 1.5

x/÷ equations

100

5x = 30

x = 6

200

x/3 = -2

x = -6

300

3/7x = 36

x = 84

400

-80 = x/5

x = -400

500

-5/6x = -10

x = 12

2 step equations

100

3x - 9 = 12

x = 7

200

-23 = 7x + 5

x = -4

300

x/2 - 2 = 5

x = 14

400

x/3 - 6 = -8

x = -6

500

1.2 - x/4 = 8.4

x = -28.8

multi step equations

100

5 - 8x - 7 - x = 16

x = -2

200

5x - 3 = 2x + 12

x = 5

300

-10 + 9x = -2x + 12

x = 2

400

2(3x - 4) = 12 + 2x

x = 5

500

2(x + 6) + 2(2x + 6) = 78

x = 9

absolute value equations

100

|x + 7| = 13

x = -20 and x = 6

200

|x - 5| = 34

x = -29 

x = 39

300

|7x| = 28

x = -4

x = 4

400

|x + 7| - 4 = 15

x = -26

x = 12

500

3|x - 2| - 4 = 11

x = -3

x = 7