18=4x+5x=18

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Solution for 18=4x+5x=18 equation: 



18=4x+5x=18

We move all terms to the left:

18-(4x+5x)=0

We add all the numbers together, and all the variables

-(+9x)+18=0

We get rid of parentheses

-9x+18=0

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

-9x=-18

x=-18/-9

x=+2

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