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23-05-2016
Mathematics

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-2 3/7 + b = 6 1/7

A. b = 3 5/7

B.b= 4 2/7

C. b = 8 2/7

D. b = 8 4/7

Relax

Respuesta :

23-05-2016

Hello,

b=6 1/7 + 2 3/7
==>b=(6+2)+(1/7+3/7)
==>b=8 4/7
Answer D

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