Bài 1 : Tínha, \(\frac{1995}{1996}\). \(\frac{19961996}{19311931}\).\(\frac{193119311931}{199519951995}\)= ?b,\(\frac{1313}{2121}\).\(\frac{165165}{143143}\).\(\frac{424242}{151515}\)=?c,\(\frac{1997.1996-1}{1995.1997+1996}\)= ?d,\(\frac{1997.1996-1}{1995.1997+1996}\)=?Mk cần gấp lắm giải giúp mk nha...
Đọc tiếp
Bài 1 : Tính
a, \(\frac{1995}{1996}\). \(\frac{19961996}{19311931}\).\(\frac{193119311931}{199519951995}\)= ?
b,\(\frac{1313}{2121}\).\(\frac{165165}{143143}\).\(\frac{424242}{151515}\)=?
c,\(\frac{1997.1996-1}{1995.1997+1996}\)= ?
d,\(\frac{1997.1996-1}{1995.1997+1996}\)=?
Mk cần gấp lắm giải giúp mk nha ♣♣♣
\(a,\frac{1995}{1996}.\frac{19961996}{19311931}.\frac{193119311931}{199519951995}\) \(c,\frac{1997.1996-1}{1995.1997+1996}\)
\(=\frac{1995}{1996}.\frac{1996}{1931}.\frac{1931}{1995}\) \(=\frac{1997.\left(1995+1\right)-1}{1995.1997+1996}\)
\(=\frac{1995.1996.1931}{1996.1931.1995}\) \(=\frac{1997.1995+1997-1}{1997.1995+1996}\)
\(=1\) \(=\frac{1997.1995+1996}{1995.1997+1996}\)
\(=1\)
Ý (a) giống ý (b)
Ý (c) giống ý (d)