marinaklat
marinaklat marinaklat
  • 10-09-2016
  • Mathematics
contestada

the sum of nine times a number and fifteen is less than or equal to the sum of twenty four and ten times the number

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texaschic101
texaschic101 texaschic101
  • 10-09-2016
9n + 15 < = 10n + 24
9n - 10n < = 24 - 15
-n < = 9
n > = -9
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