-16-18-9r=20-3r

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Solution for -16-18-9r=20-3r equation: 



-16-18-9r=20-3r

We move all terms to the left:

-16-18-9r-(20-3r)=0

We add all the numbers together, and all the variables

-9r-(-3r+20)-16-18=0

We add all the numbers together, and all the variables

-9r-(-3r+20)-34=0

We get rid of parentheses

-9r+3r-20-34=0

We add all the numbers together, and all the variables

-6r-54=0

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

-6r=54

r=54/-6

r=-9

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