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Evaluate z + z + z for x = 2, y = -3, z = -4.
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Evaluate z + z + z for x = 2, y = -3, z = -4.

User Jon
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" z + z + z " is just 3z and doesn't depend on 'x' or 'y'.

If z=-4, then (z + z + z) = 3z = -12.

User MaxYarmolinsky
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