(5y+5)+(7y-9)=180

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Solution for (5y+5)+(7y-9)=180 equation:


Simplifying
(5y + 5) + (7y + -9) = 180

Reorder the terms:
(5 + 5y) + (7y + -9) = 180

Remove parenthesis around (5 + 5y)
5 + 5y + (7y + -9) = 180

Reorder the terms:
5 + 5y + (-9 + 7y) = 180

Remove parenthesis around (-9 + 7y)
5 + 5y + -9 + 7y = 180

Reorder the terms:
5 + -9 + 5y + 7y = 180

Combine like terms: 5 + -9 = -4
-4 + 5y + 7y = 180

Combine like terms: 5y + 7y = 12y
-4 + 12y = 180

Solving
-4 + 12y = 180

Solving for variable 'y'.

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

Add '4' to each side of the equation.
-4 + 4 + 12y = 180 + 4

Combine like terms: -4 + 4 = 0
0 + 12y = 180 + 4
12y = 180 + 4

Combine like terms: 180 + 4 = 184
12y = 184

Divide each side by '12'.
y = 15.33333333

Simplifying
y = 15.33333333

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