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To get solution we want to have only one r on the LHS. 7(r+1)=5r+59 7r+7=5r+59 /-5r (subtract 5r both sides) 7r-5r+7=5r-5r+59 2r+7=59 /-7 (subtract 7 both sides) 2r=59-7 2r=52 /:2 (divide both sides by 2) r=26 - its the answer
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