3x-4x=-7-x

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



3x-4x=-7-x

We move all terms to the left:

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

We add all the numbers together, and all the variables

3x-4x-(-1x-7)=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

-1x+1x+7=0

We add all the numbers together, and all the variables

7!=0

There is no solution for this equation

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