tim phan so bang 8/18 co tich giua tu va mau la 550 va mau cua phan so chi chua thua so nguyen to 2,5
tim 2 phan so co mau bang 21 ,biet rang no lon hon -5/6 va nho hon -5/7
tim mot phan so co mau la 11 biet rang khi tu tru 18 va nhan mau voi 7 thi duoc mot phan so bang phan so da chotim mot phan so co mau la 11 biet rang khi tu tru 18 va nhan mau voi 7 thi duoc mot phan so bang phan so da cho
tim 2 phan so co mau bang 21 biet rang no lon hon -5/6 va nho hon -5/7
a.tim phan so co mau la 20 sao cho phan so do lon hon 4/13 va nho hon 5/13
b.tim phan so co mau bang 20 sao ho phanso do lon hon 5/7 va nho hon 5/6
cho phan so co mau so la 20 , lon hon 4/13 va nho hon 5/13 . Tu so cua phan so da cho la 7 . Tim phan so do
GIUP MIH NHA
Tim phan so bang phan so -33phan 57 biet hieu giua mau so va tu so la -160
tim phan so toi gian nho nhat co tu va mau la cac so tu nhien sao cho khi nhan phan so lan luot voi moi so \(\frac{10}{7};\frac{5}{6};\frac{15}{9}\)thi moi tich tim duoc la so tu nhien
tim 2 phan so co tu bang 1 cac mau la 2 so tu nhien lien tiep sao cho phan so 13/84 nam giua 2 phan so do