120=4x+5x

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Solution for 120=4x+5x equation: 



120=4x+5x

We move all terms to the left:

120-(4x+5x)=0

We add all the numbers together, and all the variables

-(+9x)+120=0

We get rid of parentheses

-9x+120=0

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

-9x=-120

x=-120/-9

x=13+1/3

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