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16-09-2016
Mathematics

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the sum of 3 numbers is 75. the greatest is double the least number and the middle number is 3 more than the least number

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16-09-2016

x + 2x + (x+3) = 75
x + x + x + x + 3 = 75
4x +3 = 75
4x + 3 - 3 = 75 - 3
4x = 72
4x/4 = 72/4
x = 18

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