8-(2r-9)=20-12r

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Solution for 8-(2r-9)=20-12r equation: 



8-(2r-9)=20-12r

We move all terms to the left:

8-(2r-9)-(20-12r)=0

We add all the numbers together, and all the variables

-(2r-9)-(-12r+20)+8=0

We get rid of parentheses

-2r+12r+9-20+8=0

We add all the numbers together, and all the variables

10r-3=0

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

10r=3

r=3/10

r=3/10

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