



 
Hi again, My suggestion is that you try something smaller. How about 4 equations in 4 unknowns? $x_1 + x_2 + x_3 = 0, x_2 + x_3 + x_4 = 0, x_3 + x_4 + x_1 = 0, x_4 + x_1 + x_2 = 0.$ Penny  


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