Follow this example and the steps used to solve this simple equation with unknowns on both sides.

**Example**

3x - 4 = 5x - 20

**Method**

Reverse so that the bigger x term is on the left (this move is optional but makes it easier)

5x - 20 = 3x - 4

Subtract 3x from both sides

2x - 20 = -4

Add 20 to both sides

2x = 16

Divide both sides by 2

**x = 8**

**Check answer**

Substitute **x = 8** into the original equation 3x - 4 = 5x - 20

Left hand side = 3 x 8 - 4 = 24 - 4 = 20

Right hand side = 5 x 8 - 20 = 40 - 20 = 20