解方程. x-2/5x=21 24-120%x=18 x-4×2/3=1/5.
问题描述:
解方程.
x-
|
24-120%x=18 | x-4×
|
答
(1)x-25x=21, 35x÷35=21÷35, x=35;(2)24-120%x=18,24-120%x+120%x=18+120%x, &nbs...
解方程.
x-
|
24-120%x=18 | x-4×
|
(1)x-25x=21, 35x÷35=21÷35, x=35;(2)24-120%x=18,24-120%x+120%x=18+120%x, &nbs...