3+(-y)-7=0

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Solution for 3+(-y)-7=0 equation: 



3+(-y)-7=0

We add all the numbers together, and all the variables

(-1y)+3-7=0

We add all the numbers together, and all the variables

(-1y)-4=0

We get rid of parentheses

-1y-4=0

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

-y=4

y=4/-1

y=-4

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