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wyndygreen1 wyndygreen1
  • 22-10-2014
  • Mathematics
Answered

The sum of a number times 7 and 19 is at least 21

Verified Answer :

Izzywombat Izzywombat
  • 23-10-2014

so 7x+19 has to be greater then or equal to 21
Subtract 19 from both sides to get 7x >_ 2
so × has to be greater than or equal to 2/7

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