(3.8+3.4*3.8+3.8*5.6)/(1.9*0.8*0.25)
问题描述:
(3.8+3.4*3.8+3.8*5.6)/(1.9*0.8*0.25)
答
(3.8+3.4*3.8+3.8*5.6)/(1.9*0.8*0.25)
=3.8*(1+3.4+5.6)/(1.9*0.2*4*0.25)
=3.8*10/1.9/0.2
=2*10/0.2
=100