42+x=(7+x)*2

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Solution for 42+x=(7+x)*2 equation: 



42+x=(7+x)*2

We move all terms to the left:

42+x-((7+x)*2)=0

We add all the numbers together, and all the variables

x-((x+7)*2)+42=0



We calculate terms in parentheses: -((x+7)*2), so:

(x+7)*2

We multiply parentheses

2x+14

Back to the equation:

-(2x+14)



We get rid of parentheses

x-2x-14+42=0

We add all the numbers together, and all the variables

-1x+28=0

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

-x=-28

x=-28/-1

x=+28

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