90=x*18

Solution for 90=x*18 equation:

Simplifying
90 = x * 18

Reorder the terms for easier multiplication:
90 = 18x

Solving
90 = 18x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-18x' to each side of the equation.
90 + -18x = 18x + -18x

Combine like terms: 18x + -18x = 0
90 + -18x = 0

Add '-90' to each side of the equation.
90 + -90 + -18x = 0 + -90

Combine like terms: 90 + -90 = 0
0 + -18x = 0 + -90
-18x = 0 + -90

Combine like terms: 0 + -90 = -90
-18x = -90

Divide each side by '-18'.
x = 5

Simplifying
x = 5