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2(r-2)/4-8=50
We move all terms to the left:
2(r-2)/4-8-(50)=0
We add all the numbers together, and all the variables
2(r-2)/4-58=0
We multiply all the terms by the denominator
2(r-2)-58*4=0
We add all the numbers together, and all the variables
2(r-2)-232=0
We multiply parentheses
2r-4-232=0
We add all the numbers together, and all the variables
2r-236=0
We move all terms containing r to the left, all other terms to the right
2r=236
r=236/2
r=118
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