0.8/0.25 (5.8*1.44+1.2*1.44)/1.2
问题描述:
0.8/0.25 (5.8*1.44+1.2*1.44)/1.2
答
0.8/0.25 =80/25=16/5=3.2
(5.8*1.44+1.2*1.44)/1.2.
=(5.8*+1.2)*1.44 /1.2
=7*1.44/1.2
=7*1.2
=8.4