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受欢迎的代数 >

6x-4g(x)=14,x-g(x)=2

解答

6 x - 4 g (x) = 14, x - g (x) = 2

解答

x = 3, g = 1

求解步骤

[6 x - 4 g = 14 x - g = 2]

对于

6 x - 4 g = 14

将

x

移到一边:

x = \frac{7 + 2 g}{3}

替代

x = \frac{7 + 2 g}{3}

[\frac{7 + 2 g}{3} - g = 2]

化简

[\frac{7 - g}{3} = 2]

对于

\frac{7 - g}{3} = 2

将

g

移到一边:

g = 1

对于

x = \frac{7 + 2 g}{3}

替代

g = 1

x = \frac{7 + 2 \cdot 1}{3}

\frac{7 + 2 \cdot 1}{3} = 3

x = 3

方程组的解为:

x = 3, g = 1

作图

流行的例子

s=2(n+1),c=3n-4

s = 2 (n + 1), c = 3 n - 4

p(x)=3,x+1x=-1/3

p (x) = 3, x + 1 x = - \frac{1}{3}

5x+6y=20,4x-3y=-23

5 x + 6 y = 20, 4 x - 3 y = - 23

x - y = 1, x + y = 9

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