2y+3(2y+1)=-21

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Solution for 2y+3(2y+1)=-21 equation: 



2y+3(2y+1)=-21

We move all terms to the left:

2y+3(2y+1)-(-21)=0

We add all the numbers together, and all the variables

2y+3(2y+1)+21=0

We multiply parentheses

2y+6y+3+21=0

We add all the numbers together, and all the variables

8y+24=0

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

8y=-24

y=-24/8

y=-3

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