2y-9=-y=12

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



2y-9=-y=12
We move all terms to the left:
2y-9-(-y)=0
We add all the numbers together, and all the variables
2y-(-1y)-9=0
We get rid of parentheses
2y+1y-9=0
We add all the numbers together, and all the variables
3y-9=0
We move all terms containing y to the left, all other terms to the right
3y=9
y=9/3
y=3

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