8+y=-9

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Solution for 8+y=-9 equation: 


Simplifying
8 + y = -9

Solving
8 + y = -9

Solving for variable 'y'.

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

Add '-8' to each side of the equation.
8 + -8 + y = -9 + -8

Combine like terms: 8 + -8 = 0
0 + y = -9 + -8
y = -9 + -8

Combine like terms: -9 + -8 = -17
y = -17

Simplifying
y = -17

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