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Klio2033 [76]
2 years ago
6

Fifteen is three times the difference between three times a number, n, and four.

Mathematics
1 answer:
Hitman42 [59]2 years ago
5 0
<h2>Translating Words into Equations</h2>

We can translate word equations into number equations by recognizing key words as operations:

  • <em>Three times</em> = multiply by 3
  • <em>Difference</em> = subtract
  • <em>Is</em> = equals

<h2>Solving the Question</h2>

We're given:

  • Fifteen is three times the difference between three times a number, n, and four.

Divide the sentence into parts:

  • [Fifteen] [is] [three times the difference between three times a number, n, and four]

Translate into numbers and operations:

  • 15 = [three times the difference between three times a number, n, and four]
  • 15 = 3 × [difference between three times a number, n, and four]
  • 15 = 3 × (3n - 4)

Isolate <em>n</em>:

15 = 3 × (3n - 4)

15 = 9n - 12

27 = 9n

n = 3

<h2>Answer</h2>

15 = 3 × (3n - 4)

n = 3

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