y+(4y-9)+(y+9)=180

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Solution for y+(4y-9)+(y+9)=180 equation: 


Simplifying
y + (4y + -9) + (y + 9) = 180

Reorder the terms:
y + (-9 + 4y) + (y + 9) = 180

Remove parenthesis around (-9 + 4y)
y + -9 + 4y + (y + 9) = 180

Reorder the terms:
y + -9 + 4y + (9 + y) = 180

Remove parenthesis around (9 + y)
y + -9 + 4y + 9 + y = 180

Reorder the terms:
-9 + 9 + y + 4y + y = 180

Combine like terms: -9 + 9 = 0
0 + y + 4y + y = 180
y + 4y + y = 180

Combine like terms: y + 4y = 5y
5y + y = 180

Combine like terms: 5y + y = 6y
6y = 180

Solving
6y = 180

Solving for variable 'y'.

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

Divide each side by '6'.
y = 30

Simplifying
y = 30

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