X-2y=8;(-6,-7)

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Solution for X-2y=8;(-6,-7) equation: 



X-2X=8(-6.-7)

We move all terms to the left:

X-2X-(8(-6.-7))=0

We add all the numbers together, and all the variables

X-2X-(8(-13))=0

We add all the numbers together, and all the variables

-1X+104=0

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

-X=-104

X=-104/-1

X=+104

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