(7-y)=12

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Solution for (7-y)=12 equation: 



(7-y)=12

We move all terms to the left:

(7-y)-(12)=0

We add all the numbers together, and all the variables

(-1y+7)-12=0

We get rid of parentheses

-1y+7-12=0

We add all the numbers together, and all the variables

-1y-5=0

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

-y=5

y=5/-1

y=-5

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