liubitsaghn6177 liubitsaghn6177
  • 16-01-2018
  • English
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Find the common difference for each arithmetic sequence. 12, 15, 18, 21

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carolmedina1230 carolmedina1230
  • 16-01-2018
 the sequence is +3  
12+3=15,15+3=18,18+3=21
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