3r+8r=-11

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Solution for 3r+8r=-11 equation: 



3r+8r=-11

We move all terms to the left:

3r+8r-(-11)=0

We add all the numbers together, and all the variables

11r+11=0

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

11r=-11

r=-11/11

r=-1

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