1+3r-8=-13

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Solution for 1+3r-8=-13 equation: 



1+3r-8=-13

We move all terms to the left:

1+3r-8-(-13)=0

We add all the numbers together, and all the variables

3r+6=0

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

3r=-6

r=-6/3

r=-2

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