0.4(2-f)=0.2f

Solution for 0.4(2-f)=0.2f equation:

Simplifying
0.4(2 + -1f) = 0.2f
(2 * 0.4 + -1f * 0.4) = 0.2f
(0.8 + -0.4f) = 0.2f

Solving
0.8 + -0.4f = 0.2f

Solving for variable 'f'.

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

Add '-0.2f' to each side of the equation.
0.8 + -0.4f + -0.2f = 0.2f + -0.2f

Combine like terms: -0.4f + -0.2f = -0.6f
0.8 + -0.6f = 0.2f + -0.2f

Combine like terms: 0.2f + -0.2f = 0.0
0.8 + -0.6f = 0.0

Add '-0.8' to each side of the equation.
0.8 + -0.8 + -0.6f = 0.0 + -0.8

Combine like terms: 0.8 + -0.8 = 0.0
0.0 + -0.6f = 0.0 + -0.8
-0.6f = 0.0 + -0.8

Combine like terms: 0.0 + -0.8 = -0.8
-0.6f = -0.8

Divide each side by '-0.6'.
f = 1.333333333

Simplifying
f = 1.333333333