x-20%x=45+20%x

来源:学生作业帮助网 编辑:作业帮 时间:2024/04/29 01:27:41

x-20%x=45+20%x
x-20%x=45+20%x

x-20%x=45+20%x
x-20%x=45+20%x
x-20%x-20%x=45
0.6x=45
x=75

x-20%x=45+20%x
x-0.2x-0.2x=45
0.6x=45
x=45/0.6
x=75

x=75

x-20%x=45+20%x
(1-1/5-1/5)x=45
3/5x=45
x=75

x-20%x=45+20%x
x-20%x-20%x=45
0.6x=45
x=75 (移项变号呗,加油哦!!!)