0.9/(X+0.4)=0.45
问题描述:
0.9/(X+0.4)=0.45
答
(X+0.4)=0.9/0.45
x+0.4=2
x=1.6
0.9/(X+0.4)=0.45
(X+0.4)=0.9/0.45
x+0.4=2
x=1.6