13+2r=43

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Solution for 13+2r=43 equation: 



13+2r=43

We move all terms to the left:

13+2r-(43)=0

We add all the numbers together, and all the variables

2r-30=0

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

2r=30

r=30/2

r=15

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