8y+11=12y-21

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Solution for 8y+11=12y-21 equation: 



8y+11=12y-21

We move all terms to the left:

8y+11-(12y-21)=0

We get rid of parentheses

8y-12y+21+11=0

We add all the numbers together, and all the variables

-4y+32=0

We move all terms containing y to the left, all other terms to the right

-4y=-32

y=-32/-4

y=+8

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