2r=-10-8r

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Solution for 2r=-10-8r equation: 



2r=-10-8r

We move all terms to the left:

2r-(-10-8r)=0

We add all the numbers together, and all the variables

2r-(-8r-10)=0

We get rid of parentheses

2r+8r+10=0

We add all the numbers together, and all the variables

10r+10=0

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

10r=-10

r=-10/10

r=-1

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