4(180-y)=2(90-y)

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Solution for 4(180-y)=2(90-y) equation:


Simplifying
4(180 + -1y) = 2(90 + -1y)
(180 * 4 + -1y * 4) = 2(90 + -1y)
(720 + -4y) = 2(90 + -1y)
720 + -4y = (90 * 2 + -1y * 2)
720 + -4y = (180 + -2y)

Solving
720 + -4y = 180 + -2y

Solving for variable 'y'.

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

Add '2y' to each side of the equation.
720 + -4y + 2y = 180 + -2y + 2y

Combine like terms: -4y + 2y = -2y
720 + -2y = 180 + -2y + 2y

Combine like terms: -2y + 2y = 0
720 + -2y = 180 + 0
720 + -2y = 180

Add '-720' to each side of the equation.
720 + -720 + -2y = 180 + -720

Combine like terms: 720 + -720 = 0
0 + -2y = 180 + -720
-2y = 180 + -720

Combine like terms: 180 + -720 = -540
-2y = -540

Divide each side by '-2'.
y = 270

Simplifying
y = 270

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