tích của 2 số là 2403. Nếu tăng thừa số thứ nhất thêm 45 đơn vị và giữ nguyên thừa số thứ 2 thì tích mới là 6408. Tìm 2 số đó
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Những câu hỏi liên quan
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
12 tháng 12 2016
thừa số thứ 2 là: 42 : 6 = 7
thừa số thứ nhất là : 7+45=52
tích 2 số lúc đầu=52 x 7=364
Đáp số 364
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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