12+3y-9=-9-9

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


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

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

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

Combine like terms: -9 + -9 = -18
3 + 3y = -18

Solving
3 + 3y = -18

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 + 3y = -18 + -3

Combine like terms: 3 + -3 = 0
0 + 3y = -18 + -3
3y = -18 + -3

Combine like terms: -18 + -3 = -21
3y = -21

Divide each side by '3'.
y = -7

Simplifying
y = -7

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