-21-2r=-5-3

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Solution for -21-2r=-5-3 equation: 



-21-2r=-5-3

We move all terms to the left:

-21-2r-(-5-3)=0

We add all the numbers together, and all the variables

-2r-21-(-8)=0

We add all the numbers together, and all the variables

-2r-13=0

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

-2r=13

r=13/-2

r=-6+1/2

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