2y-y+12+9=

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Solution for 2y-y+12+9= equation:


Simplifying
2y + -1y + 12 + 9 = 0

Reorder the terms:
12 + 9 + 2y + -1y = 0

Combine like terms: 12 + 9 = 21
21 + 2y + -1y = 0

Combine like terms: 2y + -1y = 1y
21 + 1y = 0

Solving
21 + 1y = 0

Solving for variable 'y'.

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

Add '-21' to each side of the equation.
21 + -21 + 1y = 0 + -21

Combine like terms: 21 + -21 = 0
0 + 1y = 0 + -21
1y = 0 + -21

Combine like terms: 0 + -21 = -21
1y = -21

Divide each side by '1'.
y = -21

Simplifying
y = -21

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