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Mathematics 7 Online
OpenStudy (anonymous):

Charlie's weight is nine kilograms greater than his brother's. Together they weight 99 kilograms. Let x represent the weight of the little brother. Which equation can be used to determine what each one weighs? A) x2 + 9 = 99 B) 2x - 9 = 99 C) 2x + 9 = 99 D) 3x - 9 = 99

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