164-19=20r+9

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Solution for 164-19=20r+9 equation: 



164-19=20r+9

We move all terms to the left:

164-19-(20r+9)=0

We add all the numbers together, and all the variables

-(20r+9)+145=0

We get rid of parentheses

-20r-9+145=0

We add all the numbers together, and all the variables

-20r+136=0

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

-20r=-136

r=-136/-20

r=6+4/5

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