Question

四分之三减0.6乘(二又十二分之五减1.75)等于多少,要过程

Answer 1

3/4－0.6×﹙2＋5/12－1.75﹚=0.75－0.6×﹙29/12﹚＋0.6×1.75=0.75－1.45＋1.05=1.75＋1.05－1.45=0.35

Answer 2

3/4-0.6×(29/12-1.75)
=3/4-3/5×(29/12-7/4)
=3/4-3/5×(29/12-21/12)
=3/4-3/5×2/3
=3/4-2/5
=15/20-8/20
=7/20