简便计算：一.5\9×7\11＋7\9×6\11 二.32\33×32
问题描述：
简便计算：一.5\9×7\11＋7\9×6\11 二.32\33×32
答
5/9×7/11＋7/9×6/11
=7/9×5/11＋7/9×6/11
=7/9×(5/11+6/11)
=7/9×1
=7/9
32/33×32
=(1-1/33)×32
=1×32 -1/33×32
=32 -32/33
=31+1/33
=31又1/33