3.5x=3(x+20)

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Solution for 3.5x=3(x+20) equation: 



3.5x=3(x+20)

We move all terms to the left:

3.5x-(3(x+20))=0



We calculate terms in parentheses: -(3(x+20)), so:

3(x+20)

We multiply parentheses

3x+60

Back to the equation:

-(3x+60)



We get rid of parentheses

3.5x-3x-60=0

We add all the numbers together, and all the variables

0.5x-60=0

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

0.5x=60

x=60/0.5

x=120

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