x+7=42+3x

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Solution for x+7=42+3x equation: 



x+7=42+3x

We move all terms to the left:

x+7-(42+3x)=0

We add all the numbers together, and all the variables

x-(3x+42)+7=0

We get rid of parentheses

x-3x-42+7=0

We add all the numbers together, and all the variables

-2x-35=0

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

-2x=35

x=35/-2

x=-17+1/2

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