-2y=21-6y

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Solution for -2y=21-6y equation:



-2y=21-6y
We move all terms to the left:
-2y-(21-6y)=0
We add all the numbers together, and all the variables
-2y-(-6y+21)=0
We get rid of parentheses
-2y+6y-21=0
We add all the numbers together, and all the variables
4y-21=0
We move all terms containing y to the left, all other terms to the right
4y=21
y=21/4
y=5+1/4

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