3r+7=-5;r=2

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



3r+7=-5r=2

We move all terms to the left:

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

We get rid of parentheses

3r+5r+7=0

We add all the numbers together, and all the variables

8r+7=0

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

8r=-7

r=-7/8

r=-7/8

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