42=x+4x+3x

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Solution for 42=x+4x+3x equation: 



42=x+4x+3x

We move all terms to the left:

42-(x+4x+3x)=0

We add all the numbers together, and all the variables

-(+8x)+42=0

We get rid of parentheses

-8x+42=0

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

-8x=-42

x=-42/-8

x=5+1/4

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