y=2((90-y)-15)

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Solution for y=2((90-y)-15) equation:


Simplifying
y = 2((90 + -1y) + -15)

Remove parenthesis around (90 + -1y)
y = 2(90 + -1y + -15)

Reorder the terms:
y = 2(90 + -15 + -1y)

Combine like terms: 90 + -15 = 75
y = 2(75 + -1y)
y = (75 * 2 + -1y * 2)
y = (150 + -2y)

Solving
y = 150 + -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.
y + 2y = 150 + -2y + 2y

Combine like terms: y + 2y = 3y
3y = 150 + -2y + 2y

Combine like terms: -2y + 2y = 0
3y = 150 + 0
3y = 150

Divide each side by '3'.
y = 50

Simplifying
y = 50

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