_ordinaryboy_ find d value of X, Y, Z: x+y+z=8 ; x-y+z=0 ; x+2y-z=6 - #3qpv93 - Plurk

14 years ago

find d value of X, Y, Z: x+y+z=8 ; x-y+z=0 ; x+2y-z=6

14 years ago

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