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natka813 [3]
4 years ago
7

Translate into an equation and solve.

Mathematics
1 answer:
In-s [12.5K]4 years ago
7 0
21 = 3(3n - 5)
21 = 3(3n) - 3(5)
21 = 9n - 15
<u>+15       +15</u>
<u>36 </u>= <u>9n</u>
 9      9
  4 = n
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