Theo để ra ta có
\(\frac{x}{4}-\frac{1}{y}=\frac{1}{2}\)
<=>\(\frac{xy-4}{4y}=\frac{1}{2}\)
<=>\(2xy-8=4y\)
<=>2xy-4y-8=0
<=>2y(x-2)=8
Vì x,y thuộc Z nên ta có
| 2y | 1 | 8 | -8 | -1 | 2 | 4 | -2 | -4 |
| x-2 | 8 | 1 | -1 | -8 | 4 | 2 | -4 | -2 |
| y | 1 | 4 | -4 | -1 | 1 | 2 | -1 | -2 |
| x | 10 | 3 | 1 | -6 | 6 | 4 | -2 | 0 |
Nhớ tick cho mình nha Nguyệt,cảm ơn bạn nhìu.
tim cac so nguyen x, y biet:x/4-1/y=1/2 (giai chi tiet gium nha ban!thanks!!!)
Tim ba phan so biet tong cua chung bang 3/3/70( hon so ) cac tu cua chung ti le voi 3;4;5; cac mau cua chung ti le voi 5;1;2.
Cac ban giai chi tiet gium minh nha , minh tick cho!!!!!!!!!
sorry cac ban minh viet ko dau mong cac ban thong cam
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giai chi tiet giup minh, xin cam on
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tim cac so nguyen x,y biet rang:
\(\frac{x}{4}\)- \(\frac{1}{y}\) = \(\frac{1}{2}\)
