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受欢迎的代数 >

72x+3y=41,1-4x-1=18

解答

72 x + 3 y = 41, 1 - 4 x - 1 = 18

解答

x = - \frac{9}{2}, y = \frac{365}{3}

求解步骤

[72 x + 3 y = 41 1 - 4 x - 1 = 18]

对于

1 - 4 x - 1 = 18

将

x

移到一边:

x = - \frac{9}{2}

替代

x = - \frac{9}{2}

[72 (- \frac{9}{2}) + 3 y = 41]

化简

[- 324 + 3 y = 41]

对于

- 324 + 3 y = 41

将

y

移到一边:

y = \frac{365}{3}

方程组的解为:

x = - \frac{9}{2}, y = \frac{365}{3}

作图

流行的例子

7.2m=1,5.7r=4,2n=50,x=2

7.2 m = 1, 5.7 r = 4, 2 n = 50, x = 2

-5x+y=18,3x-y=-14

- 5 x + y = 18, 3 x - y = - 14

c = 13, b = 5

x + 2 y = 9, 2 x - 3 y = 4

3 x + 2 y = 10, x + y = 4