3x-7=4x+42

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Solution for 3x-7=4x+42 equation: 



3x-7=4x+42

We move all terms to the left:

3x-7-(4x+42)=0

We get rid of parentheses

3x-4x-42-7=0

We add all the numbers together, and all the variables

-1x-49=0

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

-x=49

x=49/-1

x=-49

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