Question

tìm số tự nhiên a biết rằng 398 chia cho a dư 38 còn 450 chia cho a dư 18

Answer 1

398 : a dư 38 =>398-38=360 chia hết cho a

450 : a dư 18 =>450-18=432 chia hết cho a

Điều kiện a thuộc N^*

Ta tìm ƯCLN của 360 và 432:

360=2³.3².5

432=2⁴.3³

Suy ra ƯCLN của 360 và 432 = 2³.3²=8.9=72

Vậy a=72

Answer 2

Zu la la

Answer 3

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Answer 4

398 : a dư 38 =>398-38=360 chia hết cho a
450 : a dư 18 =>450-18=432 chia hết cho a
Điều kiện a thuộc N*
Ta tìm ƯCLN của 360 và 432:
360=2
3.3
2.5
432=2
4.3
3
Suy ra ƯCLN của 360 và 432 = 2
3.3
2=8.9=72
Vậy a=72\

chúc cậu hok tốt @_@

Answer 5

sai rôi

Answer 6

a=72 nhé

Answer 7

cho mình hỏi là tại sao tìm WCLN mà ko tìm ƯC

Answer 8

HAHAA  SAI

Answer 9

Mẹ mày béo

 

Answer 10

Mẹ mày béo