cho mình hỏi : số đối của -4/5 là bao nhiêu ạq
K
Khách
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
Những câu hỏi liên quan
27 tháng 12 2018
Mỗi lớp có số em là: 112 : 4 = 28 ( em )
Khối 5 có số học sinh nam là: 112 : 7 . 3 = 48 ( em )
Khối 5 có số học sinh nữ là: 112 - 48 = 64 ( em )
Còn chỗ nào chưa hiểu, cứ hỏi :)
Hk tốt
TN
11 tháng 7 2016
Theo bài ra, ta có: 2/5 nam và 4/7 nữ là 140 bạn hay số bạn nam và 10/7 số bạn nữ là 350 ; và 5/6 nam nhiều hơn 9/14 nữ là 35 bạn hay số bạn nam nhiều hơn 27/35 số bạn nữ là 42 bạn.
Do đó: (10/7 +27/35)số bạn nữ = 11/5 số bạn nữ bằng:
350 - 42 = 308(bạn)
Số bạn nữ là:
308:(11/5) = 140(bạn)
Số bạn nam là:
350 - 140x(10/7)= 150(bạn)
Đáp số: nam: 150 bạn
nữ: 140 bạn
11 tháng 7 2016
Mình không nghĩ ra nên bạn tham khảo nhé :
Nguồn : http://gdthhatinh.violet.vn/
Theo bài ra \(\frac{2}{5}\)số gà ít hơn \(\frac{2}{3}\)số vịt là 200 con
Vậy, \(\frac{6}{5}\)số gà ít hơn 2 lần số vịt là:
200 x 3 = 600 (con)
Hay \(\frac{3}{5}\)số gà ít hơn vịt là
600 : 2 = 300 con (1)
Mặt khác, \(\frac{3}{4}\)số gà nhiều hơn \(\frac{5}{12}\)số vịt là 125 con
Nên 9 lần số gà nhiều hơn 5 lần số vịt là:
125 x 12 = 1500 (con)
Hay \(\frac{9}{5}\)số gà nhiều hơn số vịt là:
1500 : 5 = 300 con (2)
Từ (1) và (2) ta có:
\(\frac{9}{5}\)số gà nhiều hơn \(\frac{3}{5}\)số gà số con là
300 + 300 = 600 (con)
Phân số chỉ số phần của 600 con gà là:
\(\frac{9}{5}-\frac{3}{5}=\frac{6}{5}\)
Số gà là:
600 x 5 : 6 = 500 (con)
Số vịt là:
3 x 500:5 + 300 = 600 (con)
Đáp số: 500 con gà
600 con vịt
26 tháng 2 2017
500 con gà
600con vịt
ĐÚNG 100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000%
so doi cua -4/5 la:4/5 ;**** cho minh nhe !