简算:64又1/17×1/9
问题描述：
简算:64又1/17×1/9
答
=（64*17+1）*1/(17*9)
=（64*17+1）/(17*9)
=[64*(18-1))+1]/ (17*9)
=[64*18-63]/(17*9)
=[64*2-7]/17
=121/17=7+2/17既7又2/17