ta co 18/27=2/3
a=2t,b=3t
ucln(2t,3t)=t=13
a=2.13=26
b=3.13=39
ta co 18/27=2/3
a=2t,b=3t
ucln(2t,3t)=t=13
a=2.13=26
b=3.13=39
tim phan so a/b bang phan so 18/27, biet rang ucln (a,b) 13
bang
Tim phan so \(\frac{a}{b}\) bang phan so \(\frac{18}{27}\) , biet rang UCLN ( a,b ) = 13
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 phan so biet rang phan so co tu bang 4 biet rang phan so do co phan so \(\frac{13}{17}\)va nho ho \(\frac{13}{15}\)
1)tim phan so bang phan so \(\frac{32}{60}\)biet tu va mau bang 115
2)tim phan so \(\frac{a}{b}\)=\(\frac{60}{108}\)biet UCLN(a,b)
Tim mot phan so co mau so bang 11, biet rang khi lay tu so cua phan so do tru di 18 va mau so cua phan so do nhan voi 7 thi duoc phan so moi co gia tri bang phan so can tim.Phan so do la?
tim mot phan so bang phan so 15/16 biet ucln tu va mau cua phan so do bang 24
B1)Tim X biet
A)3(X-4)-(8-X)=12
B)4(X-5)-(X=7)=-19
C)7(X-3)-5(3-X)=11X-5
B2)a)Chung to rang cac phan so tren bang nhau
A)25/53:2525/5353:252525/535353
B)37/41:3737/4141:373737/414141
b)Tim phan so bang phan so 11/33 va biet rang hieu cua mau va tu cua no bang 6
Tim phan so co tong bang 4 biet rang phan so do lon hon 13/17 va nho hon 13/15 {{ai giai dc to cho 1 tick. the do}