6x+[x-1/5]+1=100
问题描述：
6x+[x-1/5]+1=100
中括号里是个分数.T0T急
答
6 x + （x - 1 / 5）+ 1 = 100
6 x +（x - 1）/ 5 + 1 = 100
两边乘以 5 得：
30 x + （x - 1）+ 5 = 500
30 x + x - 1 + 5 = 500
31 x + 4 = 500
31 x = 500 - 4
31 x = 496
x = 496 / 31
x = 16