Geometry

To solve for it, get it by itself. start with addition and subtraction, then do multiplication and division.
Do the same thing to both sides.

25x + 17 = 90
25x + 17 - 17 = 90 - 17
25x = 73
25x / 25 = 73 / 25
x = 73/25
or
x = 2 and 23/25
or
x = 2.92