To reduce a fraction in lowest terms, first, find the greatest number that divides both the numerator and the denominator. Then, divide both the numerator and the denominator by that number.
The greatest number that divides both 4 and 12 is 4.
Now, divide the numerator and the denominator by 4.
4 ÷ 4 = 1
12 ÷ 4 = 3
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The correct answer is
The smallest number is the one that comes first while counting.
To arrange the given numbers in order from smallest to greatest, find the smallest number among all the given numbers.
21 is the smallest number.