3r=10r-28

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Solution for 3r=10r-28 equation: 



3r=10r-28

We move all terms to the left:

3r-(10r-28)=0

We get rid of parentheses

3r-10r+28=0

We add all the numbers together, and all the variables

-7r+28=0

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

-7r=-28

r=-28/-7

r=+4

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