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[" 74For (a,b,c!= -1),if the system of e...

[" 74For (a,b,c!= -1),if the system of equation "x=hat a(y+z)" ,"y=b(z+x)&z=c(x+y)," has a "],[" nonzero solution,then the value of "(a)/(a+1)+(b)/(b+1)+(c)/(c+1)" is "]

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