3r+7=2r-5

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Solution for 3r+7=2r-5 equation: 



3r+7=2r-5

We move all terms to the left:

3r+7-(2r-5)=0

We get rid of parentheses

3r-2r+5+7=0

We add all the numbers together, and all the variables

r+12=0

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

r=-12

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