Số bé là y
Ta có: x - y = 1985 => x = 1985 + y (1)
(x : 10) - (y : 5) = 17 (2)
Thay (1) va0` (2):
((1985 + y) : 10) - (y : 5) = 17
Khử mẫu:
33745 + 17y - 34y = 170
17y = 33575
y = 1975
Thay y = 1975 vào (1) => x = 3960
CHÚC BẠN HỌC GIỎI
TK MÌNH NHÉ
hieu 2 so la 2000. Neu lay so lon chia cho 10, so be chia cho 5 thi thuong so thu nhat lon hon thuong so thu 2 la 17 don vi. Tim 2 so do ?
Hiệu 2 so la 2000 neu lay so lon chia cho 10 so be chia cho 5 thi thuong thu nhat lon hon thuong thu 2 la 17 don vi tim 2 so do
Tong cua ba so la so lon nhat co ba chu so. Neu lay so thu nhat chia cho so thu hai thi duoc thuong la 5, du 3. So thu nhat hon tong cua hai so kia la 7 don vi. So thu nhat hon so thu hai la ?
mọi người ơi giúp mik với . Tong 3 so la 766 . Lay so thu nhat chia cho so thu hai thi duoc thuong la 3 .Lay so thu hai chia cho so thu ba thi duoc thuong la 2 . Tim tong so thu hai va so thu ba
hieu cua hai so la 1995 tim hai so do biet rang lay so lon chia cho so be duoc thuong la 200 va so du la 5
Hieu cua hai so la 1995 tim hai so do biet rang lay so lon chia cho so be duoc thuong la 200 va so du la 5
hieu cua hai so la 1995 tim hai so do biet rang lay so lon chia cho so be duoc thuong la 200 va co du la 5
1. Tim 2 so co tong = 129. Neu lay so thu 1 chia cho so thu 2 thi duoc thuong la 6 du 3.
2. Tim 2 so co hieu = 114. Neu xoa chu so o hang don vi cua so lon thi duoc so be
hieu cua hai so la 1995 tim hai so do biet rang lay so lon chia cho so be duoc thuong la 200 va so du la 5
