Ⅹ-1/3Ⅹ=12 3/4Ⅹ-25%Ⅹ=7.5 1/4:Ⅹ=1/2:1/5 = = = 这些是解方程.求得数和过程

问题描述:

Ⅹ-1/3Ⅹ=12 3/4Ⅹ-25%Ⅹ=7.5 1/4:Ⅹ=1/2:1/5 = = = 这些是解方程.求得数和过程
Ⅹ-1/3Ⅹ=12 3/4Ⅹ-25%Ⅹ=7.5 1/4:Ⅹ=1/2:1/5
= = =
= = =
= = =
这些是解方程 求得数和过程

【参考答案】
Ⅹ-1/3Ⅹ=12 3/4Ⅹ-25%Ⅹ=7.5 1/4:Ⅹ=1/2:1/5
(1- 1/3)x=12 (3/4 -25%)x=7.5 1/2x=1/4×1/5
2/3 x= 12 0.5x=7.5 1/2x=1/20
x = 18 x=15 x=1/10