rut gon phan so sau:
\(\frac{10^{19}+1}{10^{20}+1}\)
rut gon phan so sau
\(\frac{2^{13}+2^5}{2^{10}+2^2}\)
\(\frac{2^{13}+2^5}{2^{10}+2^2}=\frac{2^5\left(2^6+1\right)}{2^2\left(2^8+1\right)}=\frac{2^3.65}{257}=\frac{520}{257}\)
cap phan so nao sau day co the rut gon duoc 2phan so co mau so chung la 100 3/10 va5/6 7/25 va4/8 11/4 va5/12 9/10 va 1/6
Cho phan so A= \(\frac{1+3+5+...+19}{21+23+25+...+39}\)
a) Rut gon phan so A
b) Hay xoa 1 so hang o tu va mau de duoc 1 phan so moi bang phan so A
rut gon phan so 25/10
de bai rut gon roi so sanh hai phan so 6 phan 10 va bon phan nam
rut gon phan so 2^10.3^10-2^10.3^9 /2^9.3^10
Phân số trên = 2^10.3^9.(3-1)/2^9.3^10
= 2^10.3^9.2/2^9.3^10
= 2^11.3^9/2^9.3^10
= 2^2/3 = 4/3
Tk mk nha
de bai rut gon roi so sanh 6 phan 10 va 4 phan 5
Rút gọn phân số \(\frac{6}{10}\)là:
\(\frac{6}{10}\)= \(\frac{3}{5}\)
Vì \(\frac{3}{5}< \frac{4}{5}\)nên \(\frac{6}{10}< \frac{4}{5}\)
rut gon phan so 199...999/999...995(co 10 so 9 o tu va 10 so 9 o mau)
rut gon phan so
(10^2012)+2/3
(10^2003)+8/9