10y+21=2y+8

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Solution for 10y+21=2y+8 equation: 



10y+21=2y+8

We move all terms to the left:

10y+21-(2y+8)=0

We get rid of parentheses

10y-2y-8+21=0

We add all the numbers together, and all the variables

8y+13=0

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

8y=-13

y=-13/8

y=-1+5/8

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