1-.1=x

Solution for 1-.1=x equation:

Simplifying
1 + -0.1 = x

Combine like terms: 1 + -0.1 = 0.9
0.9 = x

Solving
0.9 = 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.
0.9 + -1x = x + -1x

Combine like terms: x + -1x = 0
0.9 + -1x = 0

Add '-0.9' to each side of the equation.
0.9 + -0.9 + -1x = 0 + -0.9

Combine like terms: 0.9 + -0.9 = 0.0
0.0 + -1x = 0 + -0.9
-1x = 0 + -0.9

Combine like terms: 0 + -0.9 = -0.9
-1x = -0.9

Divide each side by '-1'.
x = 0.9

Simplifying
x = 0.9