x+1/6x=14/15 (1-25%)ⅹ=36 2/5x-1/4=1/12 解方程。

1、x+(1/6)x=14/15
(7/6)x=14/15
x=4/5
2、 (1-25%)x=36
(75%)x=36
(3/4)x=36
x=48
3、(2/5)x-1/4=1/12
(2/5)x=1/12+1/4

(2/5)x=1/12+3/12
(2/5)x=4/12
(2/5)x=1/3
x=5/6本回答被网友采纳