x=3/4
解：
1-(5/6)x=3/8
(5/6)x=1-3/8
(5/6)x=5/8
(1/6)x=1/8
x=6/8
x=3/4解： 1-(5/6)x=3/8 (5/6)x=1-3/8 (5/6)x=5/8 (1/6)x=1/8 x=6/8 x=3/4
585696×255+－578－178
