42+3y=12

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Solution for 42+3y=12 equation: 



42+3y=12

We move all terms to the left:

42+3y-(12)=0

We add all the numbers together, and all the variables

3y+30=0

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

3y=-30

y=-30/3

y=-10

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