20+7y=4y+-2(-10+y)

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Solution for 20+7y=4y+-2(-10+y) equation: 



20+7y=4y+-2(-10+y)

We move all terms to the left:

20+7y-(4y+-2(-10+y))=0

We add all the numbers together, and all the variables

7y-(4y+-2(y-10))+20=0

We use the square of the difference formula

7y-(4y-2(y-10))+20=0



We calculate terms in parentheses: -(4y-2(y-10)), so:

4y-2(y-10)

We multiply parentheses

4y-2y+20

We add all the numbers together, and all the variables

2y+20

Back to the equation:

-(2y+20)



We get rid of parentheses

7y-2y-20+20=0

We add all the numbers together, and all the variables

5y=0

y=0/5

y=0

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