-8(0.1x+0.4)-0.9=0.1

Solution for -8(0.1x+0.4)-0.9=0.1 equation:

Simplifying
-8(0.1x + 0.4) + -0.9 = 0.1

Reorder the terms:
-8(0.4 + 0.1x) + -0.9 = 0.1
(0.4 * -8 + 0.1x * -8) + -0.9 = 0.1
(-3.2 + -0.8x) + -0.9 = 0.1

Reorder the terms:
-3.2 + -0.9 + -0.8x = 0.1

Combine like terms: -3.2 + -0.9 = -4.1
-4.1 + -0.8x = 0.1

Solving
-4.1 + -0.8x = 0.1

Solving for variable 'x'.

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

Add '4.1' to each side of the equation.
-4.1 + 4.1 + -0.8x = 0.1 + 4.1

Combine like terms: -4.1 + 4.1 = 0.0
0.0 + -0.8x = 0.1 + 4.1
-0.8x = 0.1 + 4.1

Combine like terms: 0.1 + 4.1 = 4.2
-0.8x = 4.2

Divide each side by '-0.8'.
x = -5.25

Simplifying
x = -5.25