8+1-2r+7r=r-3

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Solution for 8+1-2r+7r=r-3 equation:



8+1-2r+7r=r-3
We move all terms to the left:
8+1-2r+7r-(r-3)=0
We add all the numbers together, and all the variables
5r-(r-3)+9=0
We get rid of parentheses
5r-r+3+9=0
We add all the numbers together, and all the variables
4r+12=0
We move all terms containing r to the left, all other terms to the right
4r=-12
r=-12/4
r=-3

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