A = \(\dfrac{1414+1515+1616+1717+1818+1919}{2020+2121+2022+2323+2424+2525}\)
A = \(\dfrac{101\times\left(14+15+16+17+18+19\right)}{101\times\left(20+21+22+23+24+25\right)}\)
A = \(\dfrac{99}{135}\)
A = \(\dfrac{11}{15}\)
SO sánh 1414+1515+1616+1717+1818+1919 với 11
2020+2121+2222+2323+2424+2525 15
1414+1515+1616+1717+1818+1919/2020+2121+2222+2323+2424+2525
1414+1515+1616+1717+1818+1919/2020+2121+2222+2323+2424+2525
1414+1515+1616+1717+1818+1919 / 2020+2121+2222+2323+2424+2525 = ?
Tính nhanh:1414+1515+1616+1717+1818+1919/2020+2121+2222+2323+2424+2525
1414+1515+1616+1717+1818+1919 phần 2000+2121+2222+2323+2424+2525
tính nhanh
\(\frac{1414+1515+1616+1717+1818+1919}{2020+2121+2222+2323+2424+2525}\)
tính nhanh
\(\frac{1414+1515+1616+1717+1818+1919}{2020+2121+2222+2323+2424+2525}\)
tinh gia tri bieu thuc
a 1995/1997x1990/1993x1997/1994x1993/1995x997/995
b 1414+1515+1616+1717+1818+1919/2020+2121+2222+2323+2424+2525
