90=2y-15y+12

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Solution for 90=2y-15y+12 equation: 



90=2y-15y+12

We move all terms to the left:

90-(2y-15y+12)=0

We add all the numbers together, and all the variables

-(-13y+12)+90=0

We get rid of parentheses

13y-12+90=0

We add all the numbers together, and all the variables

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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