<數學中1題????>hard

你好

-5x + 3 = 3x + 35

-5x + 3 - 3 = 3x + 35 - 3

-5x - 3x = 3x + 32 - 3x

-8x = 32

-8x/-8 = 32/-8

x = -4


希望幫到你~~ ^^

2011-11-09 21:21:15 補充：
to ckk:
其實如果係分數嘅負數係可以唔洗加括號嫁~~ ^^

-5x+3=3x+35
-5x-3x=35-3
-8x=32
-x=32/8
-x=4
x=-4

-5x +3 =3x +35
3-35 =3x+5x
-32=8x
-32/8=x
-4=x
x=-4

-5x+3=3x+35
-5x-3x=35-3
-8x=32
x=32/(-8)
x=-4


2011-11-09 21:28:28 補充：
to bri:
但平時都不用分數

002,001點樣計錯?

-5x+3=3x+35
-5x-3x=35-3
-8x=32
x=32÷-8
x=-4

-5x+3=3x+35
-5x-3x=35-3
-8x=32
x=32/-8
x=-4

-5x+3=3x+35
-8x=32
-x=4
x=-4