takhaya10 takhaya10

16-11-2017
Mathematics

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

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choixongdong choixongdong

16-11-2017

18z-7(-3+2z)
= 18z + 21 - 14z
= 4z + 21

answer is False
coefficient of z is 4, not 13

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