840=22x+8x

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Solution for 840=22x+8x equation: 



840=22x+8x

We move all terms to the left:

840-(22x+8x)=0

We add all the numbers together, and all the variables

-(+30x)+840=0

We get rid of parentheses

-30x+840=0

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

-30x=-840

x=-840/-30

x=+28

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