0.4(x-4)=4.0

Solution for 0.4(x-4)=4.0 equation:

Simplifying
0.4(x + -4) = 4.0

Reorder the terms:
0.4(-4 + x) = 4.0
(-4 * 0.4 + x * 0.4) = 4.0
(-1.6 + 0.4x) = 4.0

Solving
-1.6 + 0.4x = 4.0

Solving for variable 'x'.

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

Add '1.6' to each side of the equation.
-1.6 + 1.6 + 0.4x = 4.0 + 1.6

Combine like terms: -1.6 + 1.6 = 0.0
0.0 + 0.4x = 4.0 + 1.6
0.4x = 4.0 + 1.6

Combine like terms: 4.0 + 1.6 = 5.6
0.4x = 5.6

Divide each side by '0.4'.
x = 14

Simplifying
x = 14