-78=10y+3y

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Solution for -78=10y+3y equation: 



-78=10y+3y

We move all terms to the left:

-78-(10y+3y)=0

We add all the numbers together, and all the variables

-(+13y)-78=0

We get rid of parentheses

-13y-78=0

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

-13y=78

y=78/-13

y=-6

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