55-20=x

Solution for 55-20=x equation:

Simplifying
55 + -20 = x

Combine like terms: 55 + -20 = 35
35 = x

Solving
35 = 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.
35 + -1x = x + -1x

Combine like terms: x + -1x = 0
35 + -1x = 0

Add '-35' to each side of the equation.
35 + -35 + -1x = 0 + -35

Combine like terms: 35 + -35 = 0
0 + -1x = 0 + -35
-1x = 0 + -35

Combine like terms: 0 + -35 = -35
-1x = -35

Divide each side by '-1'.
x = 35

Simplifying
x = 35