4=5y-7y

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Solution for 4=5y-7y equation: 



4=5y-7y

We move all terms to the left:

4-(5y-7y)=0

We add all the numbers together, and all the variables

-(-2y)+4=0

We get rid of parentheses

2y+4=0

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

2y=-4

y=-4/2

y=-2

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