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4 tháng 12 2016
gọi 2 số cần tìm là a, b
ta có a x b = 2403 ( 1)
và (a+ 45) x b = 6408
=> a x b+ b x 45 = 6408
(1) => 2403 + b x 45 = 6408
=> b x 45 = 6408- 2403
=> b x 45 = 4005
=> b= 89
(1) => a= 2403 : 89
=> a= 27
45 lần thừa số thứ 2 là
(6408 - 2403) : 45 = 89
số thứ 1 là
2403 : 89 = 27
vậy số thứ 1 là 27
số thứ 2 là 89
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