Question

Tim A

\(A=\frac{1998\times1996+1997\times11+1985}{1997\times1996-1995\times1996}\)

Answer 1

\(A=\frac{1998.1996+1997.11+1985}{1997.1996-1995.1996}\)

\(A=\frac{1998.1996+\left(1996+1\right).11+1985}{1996.\left(1997-1995\right)}\)

\(A=\frac{1998.1996+1996.11+11+1985}{1996.2}\)

\(A=\frac{1998.1996+1996.11+1996}{1996.2}\)

\(A=\frac{1996.\left(1998+1+1\right)}{1996.2}\)

\(A=\frac{1996.2000}{1996.2}=1000\)

Answer 2

\(\frac{1998\times1996+1996\times11+1996}{1996\times2}\)\(=\frac{2010\times1996}{2\times1996}=1005\)

k nha

Answer 3

\(A=\frac{1998.1996+1997.11+1985}{1997.1996-1995.1996}\)

\(A=\frac{1998.1996+\left(1996+1\right).11+1985}{1996.\left(1997-1995\right)}\)

\(A=\frac{1998.1996+1996.11+11+1985}{1996.2}\)

\(A=\frac{1998.1996+1996.11+1996}{1996.2}\)

\(A=\frac{1996.\left(1998+1+1\right)}{1996.2}\)

\(A=\frac{1996.2000}{1996.2}=1000\)