x-0.8x=4.2

来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/25 23:20:06
x-0.8x=4.2x-0.8x=4.2x-0.8x=4.20.2X=4.2X=21(1-0.8)x=4.2,0.2x=4.2,x=21

x-0.8x=4.2
x-0.8x=4.2

x-0.8x=4.2
0.2X=4.2
X=21

(1-0.8)x=4.2,0.2x=4.2,x=21