(13)计算:8.1×1.3-8/1.3+1.9×1.3+11.9/1.3

问题描述:

(13)计算:8.1×1.3-8/1.3+1.9×1.3+11.9/1.3

8.1×1.3-8/1.3+1.9×1.3+11.9/1.3
=1.3×(8.1+1.9)+(-8+11.9)/1.3
=13+3
=16