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Quoc Tran Anh Le Coodinator
31/08/2018 at 07:02
Quoc Tran Anh Le Coodinator
31/08/2018 at 07:01
Hán Quang Dũng
30/08/2018 at 06:33-
Huỳnh Anh Phương 30/08/2018 at 13:47If :
\(\left(20x-10\right).8.\left(15x+2\right)=0\)
=> 20.x - 10 = 0 or 15.x + 2 = 0
* 20 .x -10 = 0 * 15 . x + 2 = 0
20 . x = 0 + 10 15 .x = 0 - 2
20 . x = 10 15 .x = - 2
x = 10 : 20 x = - 2 : 15
x = \(\dfrac{1}{2}\) x = \(\dfrac{-2}{15}\)
So : x = \(\dfrac{1}{2}\) ; x = \(\dfrac{-2}{15}\)
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Hán Quang Dũng 30/08/2018 at 06:40
I am sorry
Question exactly:
Find x \(\left(20x-10\right).8.\left(15x+2\right)=0\)
Hán Quang Dũng
30/08/2018 at 06:21
Hán Quang Dũng
30/08/2018 at 06:20
Huỳnh Anh Phương
29/08/2018 at 10:52
Vanessa Smith
29/08/2018 at 09:49
Huỳnh Anh Phương
29/08/2018 at 02:30-
Lê Anh Duy 01/09/2018 at 16:043x + y = 10y + x
=> 2x = 9y
=> y = 2; x = 9 => x + y = 11
Huỳnh Anh Phương selected this answer.
Huỳnh Anh Phương
29/08/2018 at 01:34
Huỳnh Anh Phương
28/08/2018 at 05:22-
Nguyễn Mạnh Hùng 28/08/2018 at 07:49The number of red marbles is: 15-2-4 = 7(marbles)
Huỳnh Anh Phương selected this answer.
The quotion of the red marble is: 7/15
