1. 3x + 9 = 24

3x=24-9

3x=15

3x/3 =15/3

x=5

2. 15 + 4x 31

4x=-31-15

4x=-56

4x/4=-56/4

x=14

3.56 = 7 - 14 cannot be solved

4. 23x = 12

23x/23=12/23

x=12/23

5. 96-4x = -28

4x=96+28

4x=124

4x/4=124/4

x=31

6. x+2=

x+2=0

x=-2

7. 3x = 12

3x=12

3x/3=12/3

x=4

8. 2x-3=1

2x=1+3

2x=4

2x/2=4/2

x=2

9. -45x - 13 = 77 +90

-45x=167+13

-45x=180

-45x/-45=180/-45

x=-4

10. 5x + 8-7

5x=-8+7

5x=-1

5x/5=-1/5

x=-1/5