13-(2y+2)=2(y+2)-21

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Solution for 13-(2y+2)=2(y+2)-21 equation: 



13-(2y+2)=2(y+2)-21

We move all terms to the left:

13-(2y+2)-(2(y+2)-21)=0

We get rid of parentheses

-2y-(2(y+2)-21)-2+13=0



We calculate terms in parentheses: -(2(y+2)-21), so:

2(y+2)-21

We multiply parentheses

2y+4-21

We add all the numbers together, and all the variables

2y-17

Back to the equation:

-(2y-17)



We add all the numbers together, and all the variables

-2y-(2y-17)+11=0

We get rid of parentheses

-2y-2y+17+11=0

We add all the numbers together, and all the variables

-4y+28=0

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

-4y=-28

y=-28/-4

y=+7

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