12+7y-4y=42-3y

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Solution for 12+7y-4y=42-3y equation: 



12+7y-4y=42-3y

We move all terms to the left:

12+7y-4y-(42-3y)=0

We add all the numbers together, and all the variables

7y-4y-(-3y+42)+12=0

We add all the numbers together, and all the variables

3y-(-3y+42)+12=0

We get rid of parentheses

3y+3y-42+12=0

We add all the numbers together, and all the variables

6y-30=0

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

6y=30

y=30/6

y=5

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