If x, y, and z are real numbers for which
x + y - z = -8
x - y + z = 18
-x + y + z = 30
then what is xyz?
+1693 If x, y, and z are real numbers for which
x + y - z = -8
x - y + z = 18
-x + y + z = 30
Then what is xyz?
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2x = -8 + 18 x = 5
2y = -8 + 30 y = 11
2z = 18 + 30 z = 24
xyz = 1320
