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受欢迎的代数 >

10r-9a+6=7,r-6a-3=0

解答

10 r - 9 a + 6 = 7, r - 6 a - 3 = 0

解答

a = - \frac{29}{51}, r = - \frac{7}{17}

求解步骤

[10 r - 9 a + 6 = 7 r - 6 a - 3 = 0]

对于

10 r - 9 a + 6 = 7

将

r

移到一边:

r = \frac{9 a + 1}{10}

替代

r = \frac{9 a + 1}{10}

[\frac{9 a + 1}{10} - 6 a - 3 = 0]

化简

[\frac{- 51 a + 1}{10} - 3 = 0]

对于

\frac{- 51 a + 1}{10} - 3 = 0

将

a

移到一边:

a = - \frac{29}{51}

对于

r = \frac{9 a + 1}{10}

替代

a = - \frac{29}{51}

r = \frac{9 ( - \frac{29}{51} ) + 1}{10}

\frac{9 ( - \frac{29}{51} ) + 1}{10} = - \frac{7}{17}

r = - \frac{7}{17}

方程组的解为:

a = - \frac{29}{51}, r = - \frac{7}{17}

作图

流行的例子

z = 5 - 2 i, w (z) = 6 i

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

\frac{x}{2} + \frac{y}{3} = \frac{1}{2}, x + \frac{y}{2} = \frac{3}{2}

5x+2y=19,6x+5y=28

5 x + 2 y = 19, 6 x + 5 y = 28

4p+3q-r=8,5p-q+3r=12,6p-7q+4r=18

4 p + 3 q - r = 8, 5 p - q + 3 r = 12, 6 p - 7 q + 4 r = 18

x + y = 20, 0 x - 40 = y