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4+8r+4=40+8r
We move all terms to the left:
4+8r+4-(40+8r)=0
We add all the numbers together, and all the variables
8r-(8r+40)+4+4=0
We add all the numbers together, and all the variables
8r-(8r+40)+8=0
We get rid of parentheses
8r-8r-40+8=0
We add all the numbers together, and all the variables
-32!=0
There is no solution for this equation
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