3/х - 4/у = 1/6. |* 3
{.
2/х + 3/у = 7/12 |*4
9/х - 12/у= 3/6
{
8/х + 21/у =28/12
9/х+ 8/х = 1/2 + 2 4/12
17/х= 34/12
Х =17:34/12
Х= 1
2+ 3/у = 7/12
3/у = 2 7/12
У = 3 * 31/12
У = 7 3/4
Х=1 У= 7 3/4
ответ: (1;7 3/4)
