﹣1的4次方÷（﹣5）的2次方×（﹣3分之5）＋丨0.8-1丨解：原式=﹣1÷25×（﹣3分之5）＋[﹙0.8-1﹚] =﹣1／25×﹙-5／3﹚﹢0.2 =1／15﹢1／5 =4／15
=1/25*（-5/3）+0.2=-1/15+3/15=2/15
