18r+20=2(9r+10)

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Solution for 18r+20=2(9r+10) equation: 



18r+20=2(9r+10)

We move all terms to the left:

18r+20-(2(9r+10))=0



We calculate terms in parentheses: -(2(9r+10)), so:

2(9r+10)

We multiply parentheses

18r+20

Back to the equation:

-(18r+20)



We get rid of parentheses

18r-18r-20+20=0

We add all the numbers together, and all the variables

=0

r=0/1

r=0

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