2(r-9)=10

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Solution for 2(r-9)=10 equation: 



2(r-9)=10

We move all terms to the left:

2(r-9)-(10)=0

We multiply parentheses

2r-18-10=0

We add all the numbers together, and all the variables

2r-28=0

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

2r=28

r=28/2

r=14

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