解方程:2/3-1/4x-1/5x=5/12 /是分数线

问题描述:

解方程:2/3-1/4x-1/5x=5/12 /是分数线

2/3-1/4x-1/5x=5/12
1/4x+1/5x=2/3-5/12
9/20x=1/4
x=5/9