2y=(4y-42)

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Solution for 2y=(4y-42) equation: 



2y=(4y-42)

We move all terms to the left:

2y-((4y-42))=0



We calculate terms in parentheses: -((4y-42)), so:

(4y-42)

We get rid of parentheses

4y-42

Back to the equation:

-(4y-42)



We get rid of parentheses

2y-4y+42=0

We add all the numbers together, and all the variables

-2y+42=0

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

-2y=-42

y=-42/-2

y=+21

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