bewellplus.gsu.edu
samHd1 samHd1
  • 02-03-2015
  • Mathematics
Answered

Translate into an equation and solve.

Twenty-one is three times the difference between three times a number, n, and five.

Verified Answer :

Panoyin
Panoyin Panoyin
  • 02-03-2015

21 = 3(3n - 5)
21 = 3(3n) - 3(5)
21 = 9n - 15
+15       +15
36 = 9n
 9      9
  4 = n

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