3+9y=-x-12

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Solution for 3+9y=-x-12 equation:


Simplifying
3 + 9y = -1x + -12

Reorder the terms:
3 + 9y = -12 + -1x

Solving
3 + 9y = -12 + -1x

Solving for variable 'y'.

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

Add '-3' to each side of the equation.
3 + -3 + 9y = -12 + -3 + -1x

Combine like terms: 3 + -3 = 0
0 + 9y = -12 + -3 + -1x
9y = -12 + -3 + -1x

Combine like terms: -12 + -3 = -15
9y = -15 + -1x

Divide each side by '9'.
y = -1.666666667 + -0.1111111111x

Simplifying
y = -1.666666667 + -0.1111111111x

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