5r+7=3+7r

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



5r+7=3+7r

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

5r-7r-3+7=0

We add all the numbers together, and all the variables

-2r+4=0

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

-2r=-4

r=-4/-2

r=+2

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