X-x/7=18

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Solution for X-x/7=18 equation: 



X-X/7=18

We move all terms to the left:

X-X/7-(18)=0

We multiply all the terms by the denominator


X*7-X-18*7=0

We add all the numbers together, and all the variables

-1X+X*7-126=0

Wy multiply elements

-1X+7X-126=0

We add all the numbers together, and all the variables

6X-126=0

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

6X=126

X=126/6

X=21

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