Các câu hỏi tương tự
TIM HAI SO TU NHIEN A VA B BIET BCNN CUA A B BANG 420 UCLN A B BANG 21
Tim x
a, tim cac so nguyen x,y sao cho y/3 - 1/x = 1/3
b,tim cac so a va b biet a - b =5 va UCLN (a,b)/BCNN (a,b) =1/6
Luu y a/b tua la a phan b
tim phan so a/b bang phan so 18/27 biet rang ucln(a,b)=13
Bai 1 :tim hai so tu nhien a va b biet:
a) (a, b) = 15 va [a, b] = 2100 ×(a , b).
b) a× b=180 va [a, b] = 20 × (a, b).
*chu y : (a,b) la UCLN(a, b)
[a, b] la BCNN(a,b ).
giup minh giai 2 phan nay nha cac ban.
tim so tu nhiên a va b biet ucln (a va ) = 4 va a + b = 48
Tim 2 STN a va b biet:a) a+b=180 va UCLN(a, b)=15 b) a.b= 360 va UCLN(a, b)=6c) a-b=40 va UCLN(a, b)=20
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1,tim 2 so tu nhien biet tong chung = 66 UCLN=6 co 1 so chia het cho 5
2,tim 2 so tu nhien biet hieu chung = 84 UCLN = 12
3,tim 2 so tu nhien biet tich = 864 UCLN=6
4,cho 3n+1 va 5n+4 la 2 so nguyen to cung nhau tim UCLN cua 3n+1 va 5n+4
5,cho a=123456789;b=987654321 . Tim UCLN cua a va b
Tim phan so a/b thoa man:
Phan so a/b=45/100 va UCLN(a,b)=13
tim phan so a/b bang phan so 18/27, biet rang ucln (a,b) 13
bang