To reduce a fraction to the lowest terms equivalent: divide the numerator and denominator by their greatest common factor, GCF
To calculate the greatest common factor, GCF:
- 1. Factor the numerator and the denominator (into prime factors), build their prime factorizations.
- 2. Multiply all their common prime factors, taken by the lowest exponents.
1. Factor the numerator and the denominator:
To factor a number (into prime factors) - or, in other words, to break it down to prime factors - or, in other words, to build its prime factorization: find the prime numbers that multiply together to get that number.
The prime factorizations:
33 = 3 × 11
33 is a composite number.
Written with exponents:
500,000,013 = 3 × 3 × 3 × 23 × 805,153 = 33 × 23 × 805,153
500,000,013 is a composite number.
33/500,000,013 =
(33 ÷ 3) / (500,000,013 ÷ 3) =
11/166,666,671
Yet another method to reduce the fraction
To reduce a fraction without calculating the GCF: factor its numerator and denominator, then all the common prime factors are easily identified and crossed out.
33/500,000,013 =
(3 × 11)/(33 × 23 × 805,153) =
((3 × 11) ÷ 3) / ((33 × 23 × 805,153) ÷ 3) =
11/(32 × 23 × 805,153) =
11/166,666,671
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
11/166,666,671 =
11 ÷ 166,666,671 =
0.000000066 ≈
0