Circle the letter of the equation that each given solution makes true. The first one is done for you. 
 7. x  5
 8. g  7 A 2  x  7 A 9g  16 B 9  x  3 B 8 g  1 C 3x  18 C 11 g  17
 9. y  2 
10. m  9 A 7  y  1 A m 4  13 B 3y  6 B 7m  36 C C
 11. z  4 
12. a  8 A 5z  20 A 2a  10 B B a  12  20 C z  3  7 C 
13. Write an equation that involves multiplication, addition, contains a variable, and has a solution of 8. ___________________________________________________________