-7y=7y-42

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Solution for -7y=7y-42 equation: 



-7y=7y-42

We move all terms to the left:

-7y-(7y-42)=0

We get rid of parentheses

-7y-7y+42=0

We add all the numbers together, and all the variables

-14y+42=0

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

-14y=-42

y=-42/-14

y=+3

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