-9r-(-r)=16

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Solution for -9r-(-r)=16 equation: 



-9r-(-r)=16

We move all terms to the left:

-9r-(-r)-(16)=0

We add all the numbers together, and all the variables

-9r-(-1r)-16=0

We get rid of parentheses

-9r+1r-16=0

We add all the numbers together, and all the variables

-8r-16=0

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

-8r=16

r=16/-8

r=-2

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