0.8*X+X-1=0

Solution for 0.8*X+X-1=0 equation:

Simplifying
0.8X + X + -1 = 0

Reorder the terms:
-1 + 0.8X + X = 0

Combine like terms: 0.8X + X = 1.8X
-1 + 1.8X = 0

Solving
-1 + 1.8X = 0

Solving for variable 'X'.

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

Add '1' to each side of the equation.
-1 + 1 + 1.8X = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 1.8X = 0 + 1
1.8X = 0 + 1

Combine like terms: 0 + 1 = 1
1.8X = 1

Divide each side by '1.8'.
X = 0.5555555556

Simplifying
X = 0.5555555556