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2 September, 19:33

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

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  1. 2 September, 20:03
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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.
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