x+3|4x=2.8现在就要!
问题描述：
x+3|4x=2.8
现在就要!
答
X= 1.6
x+3/4x=2.8
(1+3/4)x=2.8
7/4x=2.8
X= 2.8*4/7 = 1.6
答
x+(3/4)x=2.8
(1+3/4)x=2.8
7/4x=2.8
x=2.8/7*4
x=1.6