(X-3)-(x+4)=7x

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Solution for (X-3)-(x+4)=7x equation: 



(X-3)-(X+4)=7X

We move all terms to the left:

(X-3)-(X+4)-(7X)=0

We add all the numbers together, and all the variables

-7X+(X-3)-(X+4)=0

We get rid of parentheses

-7X+X-X-3-4=0

We add all the numbers together, and all the variables

-7X-7=0

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

-7X=7

X=7/-7

X=-1

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