7.8X+7.2X=45

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/25 20:00:46
7.8X+7.2X=457.8X+7.2X=457.8X+7.2X=457.8X+7.2X=4515X=45X=37.8X+7.2X=45(7.8+7.2)X=4515X=45X=315X=45X=3

7.8X+7.2X=45
7.8X+7.2X=45

7.8X+7.2X=45
7.8X+7.2X=45
15X=45
X=3

7.8X+7.2X=45
(7.8+7.2)X=45
15X=45
X=3

15X=45
X=3

7.8X+7.2X=45
15X=45
X=3

7.8X+7.2X=45
15X=45
X=3