7-7r+7=-7

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Solution for 7-7r+7=-7 equation:



7-7r+7=-7
We move all terms to the left:
7-7r+7-(-7)=0
We add all the numbers together, and all the variables
-7r+21=0
We move all terms containing r to the left, all other terms to the right
-7r=-21
r=-21/-7
r=+3

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