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:
7 is a prime number, it cannot be factored (into other prime factors).
Written with exponents:
349,999,999,965 = 3 × 3 × 5 × 7 × 11 × 41 × 271 × 9,091 = 32 × 5 × 7 × 11 × 41 × 271 × 9,091
349,999,999,965 is a composite number.
7/349,999,999,965 =
(7 ÷ 7) / (349,999,999,965 ÷ 7) =
1/49,999,999,995
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.
7/349,999,999,965 =
7/(32 × 5 × 7 × 11 × 41 × 271 × 9,091) =
(7 ÷ 7) / ((32 × 5 × 7 × 11 × 41 × 271 × 9,091) ÷ 7) =
1/(32 × 5 × 11 × 41 × 271 × 9,091) =
1/49,999,999,995
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
1/49,999,999,995 =
1 ÷ 49,999,999,995 =
0.00000000002 ≈
0