Twelve less than thrice a number
Which of the following translates the phrase above into a mathematical expression?
3x - 12
12 - 3x
12x - 2
3x + 12
Correct Answer : A
We need to form a mathematical expression from the given word problem.
Let the unknown number be x.
Thrice a number is three times = 3x
Twelve less than thrice a number = 3x-12
Thus, the mathematical expression from the word problem is 3x-12
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