y+9=-3x

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Solution for y+9=-3x equation: 


Simplifying
y + 9 = -3x

Reorder the terms:
9 + y = -3x

Solving
9 + y = -3x

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 + y = -9 + -3x

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

Simplifying
y = -9 + -3x

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