9+y+y=-3

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Solution for 9+y+y=-3 equation: 


Simplifying
9 + y + y = -3

Combine like terms: y + y = 2y
9 + 2y = -3

Solving
9 + 2y = -3

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 = -3 + -9

Combine like terms: 9 + -9 = 0
0 + 2y = -3 + -9
2y = -3 + -9

Combine like terms: -3 + -9 = -12
2y = -12

Divide each side by '2'.
y = -6

Simplifying
y = -6

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