Jawapan

2015-10-17T11:52:39+08:00
  \left[\begin{array}{ccc}2p\\ q\end{array}\right] + 3   \left[\begin{array}{ccc}p\\ -q\end{array}\right] =   \left[\begin{array}{ccc}15\\ 8\end{array}\right]

  \left[\begin{array}{ccc}2p\\ q\end{array}\right] +   \left[\begin{array}{ccc}3p\\ -3q\end{array}\right] =   \left[\begin{array}{ccc}15\\ 8\end{array}\right]

  \left[\begin{array}{ccc}5p\\ -2q\end{array}\right]  =   \left[\begin{array}{ccc}15\\ 8\end{array}\right]

5p = 15
p = 15 /5
p = 3

-2q = 8
q = 8 /(-2)
q = -4