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Fu-Kwun Hwang
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Posts: 3085   « Embed this message on: March 24, 2009, 08:02:50 am » posted from:Taipei,T\'ai-pei,Taiwan Assume there are two linear equations:

a1*x+b1*y=c1
a2*x+b2*y=c2 $x=\frac{\begin{vmatrix}c_1 & b_1\\ c_2 & b_2 \end{vmatrix}}{\begin{vmatrix} a_1 & b_1 \\ a_2 & b_2 \end{vmatrix}}=\frac{c_1*b_2-c_2*b_1}{a_1*b_2-a_2*b_1}$, $y=\frac{\begin{vmatrix}a_1 & c_1 \\ a_2 & c_2 \end{vmatrix}}{\begin{vmatrix}a_1 & b_1 \\a_2 & b_2\end{vmatrix}}=\frac{a_1*c_2-a_2*c_1}{a_1*b_2-a_2*b_1}$

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