-18=-6-8r

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Solution for -18=-6-8r equation: 



-18=-6-8r

We move all terms to the left:

-18-(-6-8r)=0

We add all the numbers together, and all the variables

-(-8r-6)-18=0

We get rid of parentheses

8r+6-18=0

We add all the numbers together, and all the variables

8r-12=0

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

8r=12

r=12/8

r=1+1/2

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