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22 February, 13:31

Is is true that the coefficient of the expression 18z-7 (-3+2z) of z is 13

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  1. 22 February, 14:31
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    18z-7 (-3+2z)

    = 18z + 21 - 14z

    = 4z + 21

    answer is False

    coefficient of z is 4, not 13
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