> , < , =
1313/1717.... 13/17
161616/202020.... 5/6
1414/1818.....7/8
1212/1616..... 1515/2424
1313/1717 ..... 13/17 161616/202020 ....... 5/6
1414 ..... 7/8 1212/1616 ........1515/2424
1313/1717 = 13/17 161616/202020 < 5/6
1414 > 7/8 1212/1616 > 1515/2424
chúc bạn học tốt! ^_^
phần dưới cùng là cái underline đấy, ko phải dấu = đâu
1414+1515+1616+1717+1818+1919/2020+2121+2222+2323+2424+2525
Đề bài kiểu gì vậy?VIết rõ hơn đi
1414+1515+1616+1717+1818+1919
2020+2121+2222+2323+2424+2525
So sánh: 1414+1515+1616+1717/1818+1919+2020+2121 va 2424/3636
So sánh 6262 / 7878 và 2424 / 3636
Vì 6262/7878 > 2424/3636
Nên 1414 + 1515 + 1616 + 1717 / 1818 + 1919 + 2020 + 2121 > 2424/3636
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
\(\frac{1414+1515+1616+1717+1818+1919}{2000+2121+2222+2323+2424+2525}\)
\(=\frac{101.\left(14+15+16+17+18+19\right)}{101.\left(20+21+22+23+24+25\right)}\)
\(\frac{14+15+16+17+18+19}{20+21+22+23+24+25}=\frac{99}{135}=\frac{11}{15}\)
L_I_K_E NHA
1414+1515+1616+1717+1818+1919 / 2020+2121+2222+2323+2424+2525 = ?
Đinh Tuấn Việt trả lời linh tinh để kiếm l-i-k-e kìa
\(\frac{\text{(1414+1919)+(1515+1818)+(1616+1717) }}{\left(2020+2525\right)+\left(2121+2424\right)+\left(2222+2323\right)}\)\(=\frac{3333+3333+3333}{4545+4545+4545}=\frac{3333}{4545}=\frac{11}{15}\)
Tính nhanh:1414+1515+1616+1717+1818+1919/2020+2121+2222+2323+2424+2525
1414+1515+1616+1717+1818+1919/2020+2121+2222+2323+2424+2525=2525 nhé bạn
SO sánh 1414+1515+1616+1717+1818+1919 với 11
2020+2121+2222+2323+2424+2525 15
Vì 14/14 = 1; 15/15 = 1 ; ....
⇔ Tổng trên là 6 < 11.
Vì 20/20 = 1 ; 21/21 = 1 ; ...
⇒ Tổng trên là 6 < 15.
\(\frac{1414+1515+1616+1717+1818+1919}{2020+2121+2222+2323+2424+2525}\)
\(\frac{1414+1515+1616+1717+1818+1919}{2020+2121+2222+2323+2424+2525}=\frac{9999}{13635}=\frac{11}{15}\)