42=-3(8+y)

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Solution for 42=-3(8+y) equation: 



42=-3(8+y)

We move all terms to the left:

42-(-3(8+y))=0

We add all the numbers together, and all the variables

-(-3(y+8))+42=0



We calculate terms in parentheses: -(-3(y+8)), so:

-3(y+8)

We multiply parentheses

-3y-24

Back to the equation:

-(-3y-24)



We get rid of parentheses

3y+24+42=0

We add all the numbers together, and all the variables

3y+66=0

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

3y=-66

y=-66/3

y=-22

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