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2(r+3)/4-8=50
We move all terms to the left:
2(r+3)/4-8-(50)=0
We add all the numbers together, and all the variables
2(r+3)/4-58=0
We multiply all the terms by the denominator
2(r+3)-58*4=0
We add all the numbers together, and all the variables
2(r+3)-232=0
We multiply parentheses
2r+6-232=0
We add all the numbers together, and all the variables
2r-226=0
We move all terms containing r to the left, all other terms to the right
2r=226
r=226/2
r=113
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