3y+7y=30-10

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Solution for 3y+7y=30-10 equation: 



3y+7y=30-10

We move all terms to the left:

3y+7y-(30-10)=0

We add all the numbers together, and all the variables

3y+7y-20=0

We add all the numbers together, and all the variables

10y-20=0

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

10y=20

y=20/10

y=2

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