Beating the System
Level
pending
za =
a + x + y + z = 12 + a
2(a + ax) = ya + za + a + a
What is xyz?
The answer is 64.
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1 solution
The first equation can be simplified to z = y. The second equation can be simplified to x + y + z = 12 The third equation can be simplified to 2x = z + y, and since z =y, x = y = z. Therefore, 3x = 12 or x = 4. xyz = 4 × 4 × 4 = 64.