Question

Tính nhanh

\(\frac{1994\times1995-1}{1993\times1995+1994}\)

Answer 1

\(\frac{1995.1994-1}{1993.1995+1994}=\frac{1995\left(1993+1\right)-1}{1995.1993+1994}\)

\(=\frac{1995.1993+1995.1-1}{1995.1993+1994}=\frac{1995.1993+1994}{1995.1993+1994}\)

=1

Answer 2

Ông Thắng nhanh ghê

Answer 3

An à ông đừng khen bạn bè cứ phải khách sao =))

Answer 4

Nguyễn Huy Thắng Sặc=)) 

Answer 5

\(=\frac{\left(1993+1\right)\cdot1995-1}{1993\cdot1995+1994}=\frac{1993\cdot1995+\left(1995-1\right)}{1993\cdot1995+1994}\)

\(=\frac{1993\cdot1995+1994}{1993\cdot1995+1994}=\frac{1}{1}\)