n=20,o=3,n=2

解答

n = 20, o = 3, n = 2

无解

求解步骤

n = 20 o = 3 n = 2

替代

n = 20

[o = 3 20 = 2]

20 = 2

为假，因此方程组没有解

无解

33 x + 2 y = - 25, - 2 x - y = 10

\frac{3}{x} + \frac{10}{y} = 61, \frac{5}{x} + \frac{12}{y} = 11

2 x - 3 y = 1, 3 x - 4 y = 1

x + y = 17, 5 x - 4 y = - 5

8 x - 6 y = 12, 6 x + 4 y = 26