4.00x+120=3.50(80+x)

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Solution for 4.00x+120=3.50(80+x) equation: 



4.00x+120=3.50(80+x)

We move all terms to the left:

4.00x+120-(3.50(80+x))=0

We add all the numbers together, and all the variables

4.00x-(3.50(x+80))+120=0



We calculate terms in parentheses: -(3.50(x+80)), so:

3.50(x+80)

We multiply parentheses

3.5x+280

Back to the equation:

-(3.5x+280)



We get rid of parentheses

4.00x-3.5x-280+120=0

We add all the numbers together, and all the variables

0.5x-160=0

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

0.5x=160

x=160/0.5

x=320

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