X-4=3,x=-1,7,-7

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Solution for X-4=3,x=-1,7,-7 equation: 



X-4=3.X=-1.7.-7

We move all terms to the left:

X-4-(3.X)=0

We add all the numbers together, and all the variables

X-(+3.X)-4=0

We get rid of parentheses

X-3.X-4=0

We add all the numbers together, and all the variables

-2X-4=0

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

-2X=4

X=4/-2

X=-2

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