mattpatvk mattpatvk
  • 10-09-2015
  • Mathematics
contestada

9 x 27 + 2 x 31 - 28 = n

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nssamra87
nssamra87 nssamra87
  • 10-09-2015
27x9=243  2x31=62 
243+62=305 
305-28=277 n
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