8=7+r/9

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Solution for 8=7+r/9 equation: 



8=7+r/9

We move all terms to the left:

8-(7+r/9)=0

We add all the numbers together, and all the variables

-(r/9+7)+8=0

We get rid of parentheses

-r/9-7+8=0

We multiply all the terms by the denominator


-r-7*9+8*9=0

We add all the numbers together, and all the variables

-1r+9=0

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

-r=-9

r=-9/-1

r=+9

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