更新1:
ho_****** 我英中 所以用英=]
數學題目!急交功課!!!!!!!!!!!!!!
2010-11-06 4:33 am
the difference of two number is 8,and their sum is 88. Find the large number
回答 (6)
2010-11-06 4:29 pm
Let a be the larger number
b be the smaller number
a - b= 8 (1)
a+b = 88 (2)
From 1,
a-b =8
a= 8 +b (3)
Put (3) into (2)
a+b=88
(8+b)+b =88
2b +8=88
2b=80
b=40 (4)
Put (4) into (3)
a = 8+b
a= 8+(40)
a= 48
therefore, a=48 and b=40
2010-11-06 08:30:42 補充：
therefore, the larger number is 48
b be the smaller number
a - b= 8 (1)
a+b = 88 (2)
From 1,
a-b =8
a= 8 +b (3)
Put (3) into (2)
a+b=88
(8+b)+b =88
2b +8=88
2b=80
b=40 (4)
Put (4) into (3)
a = 8+b
a= 8+(40)
a= 48
therefore, a=48 and b=40
2010-11-06 08:30:42 補充：
therefore, the larger number is 48
參考: myself
2010-11-06 7:34 am
let x be the small number and y be the large number
y - x = 8...........(1)
y + x = 88........(2)
(1) + (2),
2y = 96
y=48
therefore the large number is 48
y - x = 8...........(1)
y + x = 88........(2)
(1) + (2),
2y = 96
y=48
therefore the large number is 48
2010-11-06 4:49 am
x+(x-8)=88
x+x=88+8
2x=96
x=96(divide)2
x=48
So, the large number is 48
x+x=88+8
2x=96
x=96(divide)2
x=48
So, the large number is 48
參考: me
2010-11-06 4:39 am
設X是大數,Y是細數
X-Y=8------1
x+y=88-----2
x+y=88 y=88-x------3
把3放進1
x-88-x=8 2x=96 x=48
故大數=48
X-Y=8------1
x+y=88-----2
x+y=88 y=88-x------3
把3放進1
x-88-x=8 2x=96 x=48
故大數=48
2010-11-06 4:37 am
Let x be the larger number.
x-8+x=88
2x-8=88
2x=96
x=48
The larger number is 48.
2010-11-05 20:39:13 補充：
呀ho_******`! 中學既數一定系英文嫁拉`!
x-8+x=88
2x-8=88
2x=96
x=48
The larger number is 48.
2010-11-05 20:39:13 補充：
呀ho_******`! 中學既數一定系英文嫁拉`!
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