3y+84-y+84-y=180

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Solution for 3y+84-y+84-y=180 equation:


Simplifying
3y + 84 + -1y + 84 + -1y = 180

Reorder the terms:
84 + 84 + 3y + -1y + -1y = 180

Combine like terms: 84 + 84 = 168
168 + 3y + -1y + -1y = 180

Combine like terms: 3y + -1y = 2y
168 + 2y + -1y = 180

Combine like terms: 2y + -1y = 1y
168 + 1y = 180

Solving
168 + 1y = 180

Solving for variable 'y'.

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

Add '-168' to each side of the equation.
168 + -168 + 1y = 180 + -168

Combine like terms: 168 + -168 = 0
0 + 1y = 180 + -168
1y = 180 + -168

Combine like terms: 180 + -168 = 12
1y = 12

Divide each side by '1'.
y = 12

Simplifying
y = 12

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