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:
Written with exponents:
83,333,305 = 5 × 11 × 11 × 181 × 761 = 5 × 112 × 181 × 761
83,333,305 is a composite number.
1,499,999,990 = 2 × 5 × 1,291 × 116,189
1,499,999,990 is a composite number.
83,333,305/1,499,999,990 =
(83,333,305 ÷ 5) / (1,499,999,990 ÷ 5) =
16,666,661/299,999,998
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.
83,333,305/1,499,999,990 =
(5 × 112 × 181 × 761)/(2 × 5 × 1,291 × 116,189) =
((5 × 112 × 181 × 761) ÷ 5) / ((2 × 5 × 1,291 × 116,189) ÷ 5) =
(112 × 181 × 761)/(2 × 1,291 × 116,189) =
16,666,661/299,999,998
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
16,666,661/299,999,998 =
16,666,661 ÷ 299,999,998 =
0.055555537037 ≈
0.06