解方程: 7Ⅹ+1/3×26=9 5/9Ⅹ=30×2/3 ? ?

问题描述:

解方程: 7Ⅹ+1/3×26=9 5/9Ⅹ=30×2/3 ? ?

7Ⅹ+1/3×26=9
7Ⅹ+26/3=9
7Ⅹ=9-26/3
7Ⅹ=1/3
Ⅹ=1/3÷7
Ⅹ=1/21
5/9Ⅹ=30×2/3
5/9Ⅹ=20
Ⅹ=20÷5/9
Ⅹ=36