3x+7x=5(x+12)

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Solution for 3x+7x=5(x+12) equation: 



3x+7x=5(x+12)

We move all terms to the left:

3x+7x-(5(x+12))=0

We add all the numbers together, and all the variables

10x-(5(x+12))=0



We calculate terms in parentheses: -(5(x+12)), so:

5(x+12)

We multiply parentheses

5x+60

Back to the equation:

-(5x+60)



We get rid of parentheses

10x-5x-60=0

We add all the numbers together, and all the variables

5x-60=0

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

5x=60

x=60/5

x=12

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