一題中一數學題

(-6-x)/8=2x
-6-x=16x
-6=17x
x=-6/17x
即是負6over17(負整個份數)

第一個回答是錯的，將-6當成了6。

正確答案:
設某數是x，
(-6-x)/8 = 2x
-6-x = 16x
-6 = 17x
x= - (6/17)
某數是- (6/17)

驗算:
[-6- - (6/17)] /8 = - 2(6/17)
- (96/17) /8 = -12/17
-12/17= -12/17

-6-x
-------=2x
8

-6-x=2x *8

-6-x=16x

-6=16x+x

-6=17x


-( 6/17 ) = x



個數唔一定要除得到你試下代入去
就算真係要除 就= 0.3529411764 <==time2 = 0.705882359411
你自己咁下計數機
有好多數都唔係一定可以除唔盡
如果唔係就唔會有份數lee樣野喇

The answer must be -6/17

設某數是x，
(-6-x)/8=2x
-6-x=16x
x=-(6/17)

(-6-x)/8=2x

-6-x=16x

-17x=6

x=-6/17