(4-y)/5=(2-2y)/8

Solution for (4-y)/5=(2-2y)/8 equation:

(4-y)/5=(2-2y)/8

We simplify the equation to the form, which is simple to understand 
(4-y)/5=(2-2y)/8

Reorder the terms in parentheses
( + 0.8-0.2y)=(2-2y)/8

Remove unnecessary parentheses
 + 0.8-0.2y=(2-2y)/8

Reorder the terms in parentheses
 + 0.8-0.2y=( + 0.25-0.25y)

Remove unnecessary parentheses
 + 0.8-0.2y=0.25-0.25y

We move all terms containing y to the left and all other terms to the right. 
-0.2y + 0.25y=0.25-0.8

We simplify left and right side of the equation. 
 + 0.05y=-0.55

We divide both sides of the equation by 0.05 to get y. 
y=-11