-12+5r=13

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Solution for -12+5r=13 equation: 



-12+5r=13

We move all terms to the left:

-12+5r-(13)=0

We add all the numbers together, and all the variables

5r-25=0

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

5r=25

r=25/5

r=5

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