Moi nguoi oi, giup em bai toan phan so lop ̉ nay voi
Tim phan so a/ab,(ab la so tu nhien co hai chu so) va phan so da cho bang phan so 1/6a
Giup to bai nay voi : Chung minh voi n thuoc N sao phan so sau la phan so toi gian 4n+1/6n+1
cong ca tu va mau cua phan so 15 phan 23 voi cung 1 so tu nhien n roi rut gon ta duoc phan so 2 phan 3 .Vay n =
Tim phan so toi gian a/b biet :
a) Cong tu voi 4, cong mau voi 10 thi gia tri phan so ko doi
b) Cong mau vao tu, cong mau vao mau cua phan so thi duoc phan so moi bang 2 lan phan so da cho.
cho phan so p=6n+5/3n+2 (n thuoc N)
chung minh rang phan so p la phan so toi gian
giup minh nhe
giup minh bai 150 phan toan vui
tinh gia tri bieu thuc C= hon so 5 va 9 phan 10 chia 3 phan 2 - { 2 va 1 phan 3 nhan 4 va 1 phan 2 - 2 nhan 2 va 1 phan 3 } chia 7 phan 4
Bai1 : -5 phan 2 -7x=x-4 phan 3
bai 2: Mot ba no mang mot ro trung ra ban . Sau khi ban mot hoi lau ba kiem tra tay rang neu ba ban them duoc 2 qua nua thi ba se ban duoc 4 phan 5 so trung luc dau. Tim so trung trong ro luc dau biet so trung con lai la 13 qua
CAC BAN GIUP MKNH NHA! MINH SE KET BAN
Giup mik nhanh nha : x phan 3 = 7 phan y ; x phan y = 1 phan 6 ; x phan 7 = y phan -3 . CAC BAN NHANH NHA