(4,-12y+8y-21=-5

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Solution for (4,-12y+8y-21=-5 equation: 



(4.-12y+8y-21=-5

We move all terms to the left:

(4.-12y+8y-21-(-5)=0



We calculate terms in parentheses: +(4.-12y+8y-21-(-5), so:

4.-12y+8y-21-(-5

determiningTheFunctionDomain
-12y+8y+4.-21-(-5

We add all the numbers together, and all the variables

-4y

Back to the equation:

+(-4y)



We get rid of parentheses

-4y=0

y=0/-4

y=0

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