請各位幫忙求解一下 ,式中求:X1,X2,X3,X4,X5,X6,X7,X8
d=(a1g1X1+a2g2X2+a3g3X3+a4g4X4+a5g5X5+a6g6X6+a7g7X7+a8g8X8)/ (g1X1+g2X2+g3X3+g4X4+g5X5+g6X6+g7X7+g8X8)
e=(b1g1X1+b2g2X2+b3g3X3+b4g4X4+b5g5X5+b6g6X6+b7g7X7+b8g8X8)/ (g1X1+g2X2+g3X3+g4X4+g5X5+g6X6+g7X7+g8X8)
f=(c1g1X1+c2g2X2+c3g3X3+c4g4X4+c5g5X5+c6g6X6+c7g7X7+c8g8X8)/ (g1X1+g2X2+g3X3+g4X4+g5X5+g6X6+g7X7+g8X8)
X1+X2+X3+X4+X5+X6+X7+X8=1