davidrfontaine davidrfontaine
  • 21-11-2021
  • Mathematics
contestada

What is the value of 3+6 - 9+12+15-18 +21+ 24 - 27+ ... +84 +87 - 90?

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Beedex
Beedex Beedex
  • 21-11-2021
The answer to this question is 513
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