x/3 - (y + 2)/4 = 3 |*12
(x + 4)/5 + y/3 = 0 |*15
4x - 3(y + 2) = 36
3(x + 4) + 5y = 0
4x - 3y = 42 |*3
3x + 5y = -12 |*4 и вычитаем
12x - 9y = 126
12x + 20y = -48
29y = -174
y = -6
4x - 3*(-6) = 42
4x = 24
x = 4
ответ {4,-6}
(x - 1)/6 + (y - 7)/3 = 2 |*6
(x + 1)/4 - y/5 = 0 |*20
(x - 1) + 2(y - 7) = 12
5(x + 1) - 4y = 0
x + 2y = 27 |*2 и складываем со 2-м
5x - 4y = -5
7x = 49
x = 7
7 + 2y = 27
2y = 20
y = 10
ответ {7, 10}
а как я мучаюсь решая такое
x/3 - (y + 2)/4 = 3 |*12
(x + 4)/5 + y/3 = 0 |*15
4x - 3(y + 2) = 36
3(x + 4) + 5y = 0
4x - 3y = 42 |*3
3x + 5y = -12 |*4 и вычитаем
12x - 9y = 126
12x + 20y = -48
29y = -174
y = -6
4x - 3*(-6) = 42
4x = 24
x = 4
ответ {4,-6}
(x - 1)/6 + (y - 7)/3 = 2 |*6
(x + 1)/4 - y/5 = 0 |*20
(x - 1) + 2(y - 7) = 12
5(x + 1) - 4y = 0
x + 2y = 27 |*2 и складываем со 2-м
5x - 4y = -5
7x = 49
x = 7
7 + 2y = 27
2y = 20
y = 10
ответ {7, 10}
а как я мучаюсь решая такое