2(2(30-y))+2y=80

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Solution for 2(2(30-y))+2y=80 equation: 


Simplifying
2(2(30 + -1y)) + 2y = 80
2((30 * 2 + -1y * 2)) + 2y = 80
2((60 + -2y)) + 2y = 80
(60 * 2 + -2y * 2) + 2y = 80
(120 + -4y) + 2y = 80

Combine like terms: -4y + 2y = -2y
120 + -2y = 80

Solving
120 + -2y = 80

Solving for variable 'y'.

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

Add '-120' to each side of the equation.
120 + -120 + -2y = 80 + -120

Combine like terms: 120 + -120 = 0
0 + -2y = 80 + -120
-2y = 80 + -120

Combine like terms: 80 + -120 = -40
-2y = -40

Divide each side by '-2'.
y = 20

Simplifying
y = 20

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