### Solution

a

b

c

$-36=-5y+9$

SubEqn$LHS−9=RHS−9$

$-45=-5y$

DivEqn$LHS/(-5)=RHS/(-5)$

$9=y$

RearrangeEqnRearrange equation

$y=9$

### Hint

a

Use inverse operations on both sides in order to get the variable by itself on one side.

b

Use inverse operations on both sides in order to get the variable by itself on one side.

c

Use inverse operations on both sides in order to get the variable by itself on one side.

### Answer

a

$x=3$

b

$x=9$

c

$y=9$