[19.08+(3.2-0.299/0.23)]*0.25
问题描述:
[19.08+(3.2-0.299/0.23)]*0.25
简便计算,
答
[(19+0.08)+(3.2-299/230)]/4
=(22.28-1.3)/4
=20.98/4
=5.245