R+R+10+2(r+10)=130

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Solution for R+R+10+2(r+10)=130 equation: 



++10+2(R+10)=130

We move all terms to the left:

++10+2(R+10)-(130)=0

determiningTheFunctionDomain
2(R+10)+10-130+=0

We add all the numbers together, and all the variables

2(R+10)=0

We multiply parentheses

2R+20=0

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

2R=-20

R=-20/2

R=-10

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