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29 September, 22:32

Evaluate - 4a + 8z if a=8 and z=3.

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Answers (2)
  1. 29 September, 23:43
    0
    use the substitution method

    -4a+8z

    -4 (8) + 8 (3)

    -32+24 Negative number times (*) and positive number=negative number

    =-8

    Answer is - 8
  2. 30 September, 01:26
    0
    -8

    Step-by-step explanation:

    -4a + 8z

    = - 4 (8) + 8 (3)

    = - 32+24

    = - 8
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