90-y=(2y)-18

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Solution for 90-y=(2y)-18 equation:


Simplifying
90 + -1y = (2y) + -18

Reorder the terms:
90 + -1y = -18 + (2y)

Solving
90 + -1y = -18 + (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.
90 + -1y + (-2y) = -18 + (2y) + (-2y)

Combine like terms: -1y + (-2y) = -3y
90 + -3y = -18 + (2y) + (-2y)

Combine like terms: (2y) + (-2y) = 0
90 + -3y = -18 + 0
90 + -3y = -18

Add '-90' to each side of the equation.
90 + -90 + -3y = -18 + -90

Combine like terms: 90 + -90 = 0
0 + -3y = -18 + -90
-3y = -18 + -90

Combine like terms: -18 + -90 = -108
-3y = -108

Divide each side by '-3'.
y = 36

Simplifying
y = 36

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