7y-15y=-21-27

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Solution for 7y-15y=-21-27 equation: 



7y-15y=-21-27

We move all terms to the left:

7y-15y-(-21-27)=0

We add all the numbers together, and all the variables

7y-15y-(-48)=0

We add all the numbers together, and all the variables

-8y+48=0

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

-8y=-48

y=-48/-8

y=+6

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