X+4X=20 6M-3M=27 解方程

分类: 作业答案 • 2021-12-28 16:15:10

问题描述：

答

X+4X=20
5X = 20
X = 20 ÷ 5
X = 4
6M-3M=27
3M = 27
M = 27 ÷ 3
M = 9