64-90=x

Solution for 64-90=x equation:

Simplifying
64 + -90 = x

Combine like terms: 64 + -90 = -26
-26 = x

Solving
-26 = x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
-26 + -1x = x + -1x

Combine like terms: x + -1x = 0
-26 + -1x = 0

Add '26' to each side of the equation.
-26 + 26 + -1x = 0 + 26

Combine like terms: -26 + 26 = 0
0 + -1x = 0 + 26
-1x = 0 + 26

Combine like terms: 0 + 26 = 26
-1x = 26

Divide each side by '-1'.
x = -26

Simplifying
x = -26