y+y+9+4y-9=180

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


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

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

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

Combine like terms: y + y = 2y
2y + 4y = 180

Combine like terms: 2y + 4y = 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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