100-12+.15=x

Solution for 100-12+.15=x equation:

Simplifying
100 + -12 + 0.15 = x

Combine like terms: 100 + -12 = 88
88 + 0.15 = x

Combine like terms: 88 + 0.15 = 88.15
88.15 = x

Solving
88.15 = 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.
88.15 + -1x = x + -1x

Combine like terms: x + -1x = 0
88.15 + -1x = 0

Add '-88.15' to each side of the equation.
88.15 + -88.15 + -1x = 0 + -88.15

Combine like terms: 88.15 + -88.15 = 0.00
0.00 + -1x = 0 + -88.15
-1x = 0 + -88.15

Combine like terms: 0 + -88.15 = -88.15
-1x = -88.15

Divide each side by '-1'.
x = 88.15

Simplifying
x = 88.15