y+9+y=

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Solution for y+9+y= equation: 


Simplifying
y + 9 + y = 0

Reorder the terms:
9 + y + y = 0

Combine like terms: y + y = 2y
9 + 2y = 0

Solving
9 + 2y = 0

Solving for variable 'y'.

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

Add '-9' to each side of the equation.
9 + -9 + 2y = 0 + -9

Combine like terms: 9 + -9 = 0
0 + 2y = 0 + -9
2y = 0 + -9

Combine like terms: 0 + -9 = -9
2y = -9

Divide each side by '2'.
y = -4.5

Simplifying
y = -4.5

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