-3x-x=7

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Solution for -3x-x=7 equation: 



-3x-x=7

We move all terms to the left:

-3x-x-(7)=0

We add all the numbers together, and all the variables

-4x-7=0

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

-4x=7

x=7/-4

x=-1+3/4

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