[0.15+(3.74-1.8/0.4]乘0.8 能简便的要简便

问题描述:

[0.15+(3.74-1.8/0.4]乘0.8 能简便的要简便

[0.15+(3.74-1.8)/0.4]x0.8
=0.15x0.8+(3.74-1.8)/0.4x0.8
=0.12+1.94x2
=4