73.6-13.6×21.5÷4怎样简便怎样计算

问题描述:

73.6-13.6×21.5÷4怎样简便怎样计算

73.6-13.6×21.5÷4
=73.6-13.6÷4×21.5
=73.6-3.4×21.5
=73.6-73.1
=0.5能再问你一个问题吗?另外提问吧