Bảo Khanh Trần

Tìm các cặp số nguyên (x,y) biết

x/3-1/y+1=1/6

Nguyễn Lê Phước Thịnh
31 tháng 3 2023 lúc 22:20

\(\dfrac{x}{3}-\dfrac{1}{y+1}=\dfrac{1}{6}\)

=>\(\dfrac{xy+x-3}{3\left(y+1\right)}=\dfrac{1}{6}\)

=>\(2\left(xy+x-3\right)=1\)

=>2xy+2x-6=1

=>2xy+2x=7

=>2x(y+1)=7

=>x(y+1)=7/2

mà x,y nguyên

nên \(\left(x,y\right)\in\varnothing\)

Bình luận (0)
????
1 tháng 2 lúc 21:18

1/y+1=x/3-1/6

1/y+1=2x/6-1/6

1/y+1= 2x-1/6

=> 1.6=(y+1).(2x-1)

ta có bảng

y+1     6      1       

Past lives couldn't ever hold me down Lost love is sweeter when it's finally found I've got the strangest feeling This isn't our first time around Past lives couldn't ever come between us Sometimes the dreamers finally wake up Don't wake me I'm not dreaming Don't wake me I'm not dreaming All my past lives they got nothing on me Golden eagle you're the one and only flying high Through the cities in the sky I'll take you way back, countless centuries Don't you remember that you were meant to be My Queen of Hearts, meant to be my love Through all of my lives I'd never thought I'd wait so long for you The timing is right The stars are aligned So save that heart for me 'Cause girl you know that you're my destiny (d-destiny) Swear to the moon, the stars, the sons and the daughters Our love is deeper than the oceans of water I need you now, I've waited oh so long (Gimme love) I need you now, I've waited oh so long Passing seasons, empty bottles of wine My ancient kingdom came crashing down without you Baby child, I'm lost without your love Diamond sparrow, my moonlit majesty You know I need you, come flying back to me Through all of my lives I'd never thought I'd wait so long for you The timing is right The stars are aligned So save that heart for me 'Cause girl you know that you're my destiny (d-destiny) Respect to the moon, the stars, their sons and their daughters Our love is deeper than the oceans of water Save that heart for me And girl I'll give you everything you need (everything you need) Here's to our past lives, our mothers and fathers Our love is deeper than the oceans of water I need you now, I've waited oh so long, yeah (Gimme love) I need you now, I've waited oh so long I need you now, I've waited oh so long, yeah (Gimme love) I need you now, I've waited oh so long So save that heart for me 'Cause girl you know that you're my destiny (d-destiny) Respect to the moon, the stars, their sons and their daughters Our love is deeper than the oceans of water Save that heart for me And girl I'll give you everything you need (everything you need) Here's to our past lives, our mothers and fathers Our love is deeper than the oceans of wat

2x-1    1      6         ...

y         5      0

x        1       7/2

                   loại

Bình luận (0)
Nguyễn Xuân Lâm
17 tháng 2 lúc 16:16

bạn nguyễn lê phước thịnh làm sai rồi

 

Bình luận (0)

Các câu hỏi tương tự
Đỗ Nam Trâm
Xem chi tiết
Đinh Quốc Hiếu
Xem chi tiết
Hoilamgi
Xem chi tiết
Nguyễn Minh Thành
Xem chi tiết
Vũ Ngọc Diệp
Xem chi tiết
Nguyễn Châu Anh
Xem chi tiết
Nguyễn Chi Linh
Xem chi tiết
Bằng Conan
Xem chi tiết
trương uyên nhã
Xem chi tiết