(-12y+8y-21=-5)

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Solution for (-12y+8y-21=-5) equation: 



(-12y+8y-21=-5)

We move all terms to the left:

(-12y+8y-21-(-5))=0



We calculate terms in parentheses: +(-12y+8y-21-(-5)), so:

-12y+8y-21-(-5)

We add all the numbers together, and all the variables

-4y-16

Back to the equation:

+(-4y-16)



We get rid of parentheses

-4y-16=0

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

-4y=16

y=16/-4

y=-4

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