Question

How do you solve `28.5 + 18x = 16.5 + 20x`?

Answer 1

You add and/or subtract the same from both sides until you get the `x`'s on one side and the numbers on the other.

Explanation:

Subtract `18x` from both sides:
`28.5+cancel(18x)-cancel(18x)=16.5+20x-18x`

Subtract `16.5` from both sides:
`28.5-16.5=cancel16.5-cancel16.5+(20-18)x`
`12=2x->x=12/2=6`