X=r/9+8

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Solution for X=r/9+8 equation: 



X=X/9+8

We move all terms to the left:

X-(X/9+8)=0

We get rid of parentheses

X-X/9-8=0

We multiply all the terms by the denominator


X*9-X-8*9=0

We add all the numbers together, and all the variables

-1X+X*9-72=0

Wy multiply elements

-1X+9X-72=0

We add all the numbers together, and all the variables

8X-72=0

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

8X=72

X=72/8

X=9

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