0.5H/5=(0.5H-16.8)/4

问题描述:

0.5H/5=(0.5H-16.8)/4

H是未知数?
0.5H/5=(0.5H-16.8)/4
=>0.1H=(0.5H-16.8)/4
=>H=(5H-168)/4
=>0.25H=168/4
=>H=168