8r-3r=40

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Solution for 8r-3r=40 equation: 



8r-3r=40

We move all terms to the left:

8r-3r-(40)=0

We add all the numbers together, and all the variables

5r-40=0

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

5r=40

r=40/5

r=8

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