1=1x-((1x)(0.2))

Solution for 1=1x-((1x)(0.2)) equation:

Simplifying
1 = 1x + -1((1x)(0.2))

Remove parenthesis around (1x)
1 = 1x + -1(1x(0.2))

Reorder the terms for easier multiplication:
1 = 1x + -1(1 * 0.2x)

Multiply 1 * 0.2
1 = 1x + -1(0.2x)

Remove parenthesis around (0.2x)
1 = 1x + -1 * 0.2x

Multiply -1 * 0.2
1 = 1x + -0.2x

Combine like terms: 1x + -0.2x = 0.8x
1 = 0.8x

Solving
1 = 0.8x

Solving for variable 'x'.

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

Add '-0.8x' to each side of the equation.
1 + -0.8x = 0.8x + -0.8x

Combine like terms: 0.8x + -0.8x = 0.0
1 + -0.8x = 0.0

Add '-1' to each side of the equation.
1 + -1 + -0.8x = 0.0 + -1

Combine like terms: 1 + -1 = 0
0 + -0.8x = 0.0 + -1
-0.8x = 0.0 + -1

Combine like terms: 0.0 + -1 = -1
-0.8x = -1

Divide each side by '-0.8'.
x = 1.25

Simplifying
x = 1.25