.25[(1.25x+x)-.2]=72

Solution for .25[(1.25x+x)-.2]=72 equation:

Simplifying
0.25[(1.25x + x) + -0.2] = 72

Combine like terms: 1.25x + x = 2.25x
0.25[(2.25x) + -0.2] = 72
0.25[(2.25x) + -0.2] = 72

Reorder the terms:
0.25[-0.2 + (2.25x)] = 72
[-0.2 * 0.25 + (2.25x) * 0.25] = 72
[-0.05 + 0.5625x] = 72

Solving
-0.05 + 0.5625x = 72

Solving for variable 'x'.

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

Add '0.05' to each side of the equation.
-0.05 + 0.05 + 0.5625x = 72 + 0.05

Combine like terms: -0.05 + 0.05 = 0.00
0.00 + 0.5625x = 72 + 0.05
0.5625x = 72 + 0.05

Combine like terms: 72 + 0.05 = 72.05
0.5625x = 72.05

Divide each side by '0.5625'.
x = 128.0888889

Simplifying
x = 128.0888889