Question

Donnel practiced the piano 3 hours longer than Marcus. Together they practiced the piano for 11 hours. How many hours did each boy practice??

Answer 1

Here is the equation:
`x+(x+3)=11` ⇒
`x+x+3=11`


You need to get "x" by itself so minus 3 from each side


`x+x+3-3=11-3` ⇒
`x+x=8` ⇒
`2x=8`

Divide 8 by 2


`8` ÷
`2=4`

x=4

So each 4 is equivalent to 4

Lets check:


`4+(4+3)=11` ⇒
`4+4+3=11` ⇒
`11=11`

So that means that Marcus practiced the piano for 4 hours and Donnel practiced for 7