13-2X+9X=33.3解方程.

来源：学生作业学帮网编辑：学帮网时间：2024/06/29 23:09:07

13-2X+9X=33.3解方程.

-2X+9X=33.3-13
7X=20.3
X=20.3/7
X=2.9

13-2X+9X=33.3
7x=33.3-13
7x=20.3
x=2.9

13-2X+9X=33.3
7x=20.3
x=2.9

7x=20.3
x=2.9