(75%x -56)/x=2/(2+3)
问题描述:
(75%x -56)/x=2/(2+3)
答
0.75-56/X=0.4
56/X=0.35
X=160
答
(75%x -56)/x=2/(2+3)
5(75%x -56)=2x
3.75x-280=2x
1.75x=280
x=280÷1.75
x=160
答
(75%x -56)/x=2/(2+3)
2x=5(0.75x-56)
2x=3.75x-280
1.75x=280
x=160