5454/5757-171717/191919 Question 5454/5757-171717/191919 in progress 0 Môn Toán Khoii Minh 6 years 2020-11-24T09:32:53+00:00 2020-11-24T09:32:53+00:00 2 Answers 73 views 0
Answers ( )
Đáp án:
Giải thích các bước giải:
`5454/5757-171717/191919`
`={5454:303}/{5757:303}-{171717:10101}/{191919:10101}`
`=18/19-17/19`
`=1/19`
`5454/5757-171717/191919`
`=54/57 – 17/19`
`Quy` `đồng` `54/57 – ( 17*3/19*3)`
`= 54/57 – 51/57`
`=3/57`
`=1/19`