3-y=-42

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Solution for 3-y=-42 equation: 



3-y=-42

We move all terms to the left:

3-y-(-42)=0

We add all the numbers together, and all the variables

-1y+45=0

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

-y=-45

y=-45/-1

y=+45

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