Ansley44721 Ansley44721
  • 26-04-2018
  • Mathematics
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Diego has 7 packs of markers. Each pack has x markers in it. After Lin gives him 9 more markers,he has a total of 30 markers

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carlosego
carlosego carlosego
  • 07-05-2018
For this case we must find:
 x = the number of marbles in a package.
 For this, according to the statement we have the following equation:
 7x + 9 = 30
 Clearing x we have:
 7x = 30-9
 x = 21/7
 x = 3 marbles
 Answer:
 
Each pack of marbles contains 3 marbles
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