0.9x-0.9(5-x)=3.6

Solution for 0.9x-0.9(5-x)=3.6 equation:

Simplifying
0.9x + -0.9(5 + -1x) = 3.6
0.9x + (5 * -0.9 + -1x * -0.9) = 3.6
0.9x + (-4.5 + 0.9x) = 3.6

Reorder the terms:
-4.5 + 0.9x + 0.9x = 3.6

Combine like terms: 0.9x + 0.9x = 1.8x
-4.5 + 1.8x = 3.6

Solving
-4.5 + 1.8x = 3.6

Solving for variable 'x'.

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

Add '4.5' to each side of the equation.
-4.5 + 4.5 + 1.8x = 3.6 + 4.5

Combine like terms: -4.5 + 4.5 = 0.0
0.0 + 1.8x = 3.6 + 4.5
1.8x = 3.6 + 4.5

Combine like terms: 3.6 + 4.5 = 8.1
1.8x = 8.1

Divide each side by '1.8'.
x = 4.5

Simplifying
x = 4.5