takhaya10 takhaya10
  • 16-11-2017
  • Mathematics
contestada

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

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choixongdong
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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