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Translate into an equation and solve. Twenty-one is three times the difference between three times a number, n, and five.

Translate into an equation and solve. Twenty-one is three times the difference between three times a number, n, and five.
asked 30.6k views
1 vote
Translate into an equation and solve.

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

asked
User Jitendra Modi
by
7.2k points

1 Answer

4 votes
21 = 3(3n - 5)
21 = 3(3n) - 3(5)
21 = 9n - 15
+15 +15
36 = 9n
9 9
4 = n
answered
User ArGh
by
8.2k points
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