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4(2-8r)-2=198
We move all terms to the left:
4(2-8r)-2-(198)=0
We add all the numbers together, and all the variables
4(-8r+2)-2-198=0
We add all the numbers together, and all the variables
4(-8r+2)-200=0
We multiply parentheses
-32r+8-200=0
We add all the numbers together, and all the variables
-32r-192=0
We move all terms containing r to the left, all other terms to the right
-32r=192
r=192/-32
r=-6
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