What is the solution to the equation x + 4.5 = 20.5? 4.6 8 12 16

The answer will be 16

We don't have to try each number. We can just solve it ourselves then pick the answer. We need x by itself, so we need to subtract 4.5 from both sides.

x+4.5=20.5

x=16

The solution of the equation would be 16.