(x-4)-(x+4)=0.25x

问题描述:

(x-4)-(x+4)=0.25x

x-4-x-4=0.25x
-4-4=0.25x
-8=0.25x
x=-32

(x-4)-(x+4)=0.25x
x-4-x-4=0.25x
-8=0.25x
x=-32

怎么是这样的问题?有点奇怪啊?

x-4-x-4=0.25x
-8=0.25x
0.25x=-8
x=-32

x-4-x-4=0.25
-4=0.25x
x=- 4
___
25

原是为
x-4-x-4=0.25x
合并
-8=0.25x
化简
x=-32

x-4-x-4=0.25x
-8=0.25x
0.25x=-8
x=-32

X=-32

-32

去括号得x-4-x-4=0.25x
化简得 0.25x=-8
x=-32