171=126-y

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Solution for 171=126-y equation: 



171=126-y

We move all terms to the left:

171-(126-y)=0

We add all the numbers together, and all the variables

-(-1y+126)+171=0

We get rid of parentheses

1y-126+171=0

We add all the numbers together, and all the variables

y+45=0

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

y=-45

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