x-4/1x=8/3 x-0.8x=22.3/2x+2/1x=42
问题描述:
x-4/1x=8/3 x-0.8x=22.3/2x+2/1x=42
答
(1) (1—4/1)x=8/3
4/3x=8/3
X=3/8除4/3
(2)(1-0.8)x=22
0.2x=22
x=110
(3) 7/2x=42
x=12这么简单的题目,认真听课就会了,我也才四年级