0.4(8-0.2w)=-y

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Solution for 0.4(8-0.2w)=-y equation: 


Simplifying
0.4(8 + -0.2w) = -1y
(8 * 0.4 + -0.2w * 0.4) = -1y
(3.2 + -0.08w) = -1y

Solving
3.2 + -0.08w = -1y

Solving for variable 'w'.

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

Add '-3.2' to each side of the equation.
3.2 + -3.2 + -0.08w = -3.2 + -1y

Combine like terms: 3.2 + -3.2 = 0.0
0.0 + -0.08w = -3.2 + -1y
-0.08w = -3.2 + -1y

Divide each side by '-0.08'.
w = 40 + 12.5y

Simplifying
w = 40 + 12.5y

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