求把这题简便运算啊啊啊啊啊
问题描述:
求把这题简便运算啊啊啊啊啊
15/16*5/17+2/17*5/16
答
15/16*5/17+2/17*5/16
=15/16*5/17+5/17*2/16
=5/17*(15/16+2/16)
=5/17*17/16
=5/16