13-2X+9X=33.3解方程.
问题描述:
13-2X+9X=33.3解方程.
答
-2X+9X=33.3-13
7X=20.3
X=20.3/7
X=2.9
13-2X+9X=33.3解方程.
-2X+9X=33.3-13
7X=20.3
X=20.3/7
X=2.9