30=x+2x+3x

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Solution for 30=x+2x+3x equation: 



30=x+2x+3x

We move all terms to the left:

30-(x+2x+3x)=0

We add all the numbers together, and all the variables

-(+6x)+30=0

We get rid of parentheses

-6x+30=0

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

-6x=-30

x=-30/-6

x=+5

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