-1=.8x

Solution for -1=.8x equation:

Simplifying
-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