2(10r-7)-2(10r+1)=r+2r

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Solution for 2(10r-7)-2(10r+1)=r+2r equation: 



2(10r-7)-2(10r+1)=r+2r

We move all terms to the left:

2(10r-7)-2(10r+1)-(r+2r)=0

We add all the numbers together, and all the variables

2(10r-7)-2(10r+1)-(+3r)=0

We multiply parentheses

20r-20r-(+3r)-14-2=0

We get rid of parentheses

20r-20r-3r-14-2=0

We add all the numbers together, and all the variables

-3r-16=0

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

-3r=16

r=16/-3

r=-5+1/3

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