kelleykiduckey kelleykiduckey
  • 25-02-2017
  • Mathematics
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the sum of 6 and 4 times a number (n) equals 90

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Tucon
Tucon Tucon
  • 25-02-2017
   
(6 + 4) × n = 90
10 × n = 90
n = 90 : 10 = 9
n = 9
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