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?
Try adding 2 equations together, that will isolate one variable and give you the value for them.
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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?
2x =10
2y = 22
2z = 48
xyz = 1320