3y+12+(4y-13)+90=180

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Solution for 3y+12+(4y-13)+90=180 equation:


Simplifying
3y + 12 + (4y + -13) + 90 = 180

Reorder the terms:
3y + 12 + (-13 + 4y) + 90 = 180

Remove parenthesis around (-13 + 4y)
3y + 12 + -13 + 4y + 90 = 180

Reorder the terms:
12 + -13 + 90 + 3y + 4y = 180

Combine like terms: 12 + -13 = -1
-1 + 90 + 3y + 4y = 180

Combine like terms: -1 + 90 = 89
89 + 3y + 4y = 180

Combine like terms: 3y + 4y = 7y
89 + 7y = 180

Solving
89 + 7y = 180

Solving for variable 'y'.

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

Add '-89' to each side of the equation.
89 + -89 + 7y = 180 + -89

Combine like terms: 89 + -89 = 0
0 + 7y = 180 + -89
7y = 180 + -89

Combine like terms: 180 + -89 = 91
7y = 91

Divide each side by '7'.
y = 13

Simplifying
y = 13

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