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 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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