-80+12.2=x

Solution for -80+12.2=x equation:

Simplifying
-80 + 12.2 = x

Combine like terms: -80 + 12.2 = -67.8
-67.8 = x

Solving
-67.8 = 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.
-67.8 + -1x = x + -1x

Combine like terms: x + -1x = 0
-67.8 + -1x = 0

Add '67.8' to each side of the equation.
-67.8 + 67.8 + -1x = 0 + 67.8

Combine like terms: -67.8 + 67.8 = 0.0
0.0 + -1x = 0 + 67.8
-1x = 0 + 67.8

Combine like terms: 0 + 67.8 = 67.8
-1x = 67.8

Divide each side by '-1'.
x = -67.8

Simplifying
x = -67.8