Five times a number is equal to the number increased by 12

X is the number

5 times of it is 5x

it's equal to the number increased by 12 or 12+x

remember, you can do anything to an equation as long as you do it to both sides

5x=12+x

minus x from both sides

4x=12

divie both sides by 4

x=3

the number is 3