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12 June, 16:57

Subtract the quantity 10x + 5y - 4z from the sum of the quantities 7z + 3y - 10x and 9x - 12y - z

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  1. 12 June, 18:48
    0
    11x + 14y - 10z

    Step-by-step explanation:

    firstly deal with sum part and then subtract, making sure that you add and subtract values with the same unknowns

    (7z + 3y - 10x) + (9x - 12y - z)

    then

    (10x + 5y - 4z) - (6z - 9y - x) 10
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