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17 May, 20:01

21) - 5z - 4 + 8 - x; use x = 7, and z = 2

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  1. 17 May, 20:18
    0
    -13

    Step-by-step explanation:

    -5z-4+8-x

    -5 (2) - 4+8-7

    -10-4+8-7

    -14+8-7

    -21+8

    -13
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