7r-10=3r-126

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Solution for 7r-10=3r-126 equation: 



7r-10=3r-126

We move all terms to the left:

7r-10-(3r-126)=0

We get rid of parentheses

7r-3r+126-10=0

We add all the numbers together, and all the variables

4r+116=0

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

4r=-116

r=-116/4

r=-29

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