7+x=3x-5

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Solution for 7+x=3x-5 equation: 



7+x=3x-5

We move all terms to the left:

7+x-(3x-5)=0

We get rid of parentheses

x-3x+5+7=0

We add all the numbers together, and all the variables

-2x+12=0

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

-2x=-12

x=-12/-2

x=+6

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