7=1-3x+x

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Solution for 7=1-3x+x equation: 



7=1-3x+x

We move all terms to the left:

7-(1-3x+x)=0

We add all the numbers together, and all the variables

-(-2x+1)+7=0

We get rid of parentheses

2x-1+7=0

We add all the numbers together, and all the variables

2x+6=0

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

2x=-6

x=-6/2

x=-3

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