能简算的要简算98*96/974/9*3/16+5/12
问题描述：
能简算的要简算
98*96/97
4/9*3/16+5/12
答
1）=98*（1-1/97）=98-98/97=96又96/97
2）=4/9*3/16+4/9*15/16=4/9*（15/16+3/16）=1/2
答
98*96/97=(97+1)(97-1)/97=97^2-1/97=97-1/97=96又96/97
4/9*3/16+5/12=1/3*1/4+5/12=1/12+5/12=6/12=1/2
答
98*96/97
=(97+1)(97-1)/97
=(97²-1)/97
=97²/97-1/97
=97-1/97
=96又96/97
4/9*3/16+5/12
=1/3*1/4+5/12
=1/12+5/12
=6/12
=1/2