Simplify the operation
Reduce (simplify) the fractions to their lowest terms equivalents:
- To reduce a fraction to the lowest terms equivalent: divide both the numerator and denominator by their greatest common factor, GCF.
The fraction: - 2/4
- The prime factorizations of the numerator and denominator:
- 2 is a prime number.
- 4 = 22
- Multiply all the common prime factors: if there are repeating prime factors we only take them once, and only the ones having the lowest exponent (the lowest powers).
- GCF (2; 4) = 2
- 2/4 = - (2 ÷ 2)/(4 ÷ 2) = - 1/2
The fraction can also be reduced without calculating GCF; factor the numerator and denominator and cross out all the common prime factors:
- 2/4 = - 2/22 = - (2 ÷ 2)/(22 ÷ 2) = - 1/2
The fraction: - 7/13
- 7/13 is already reduced to the lowest terms.
The numerator and denominator have no common prime factors:
- 7 is a prime number.
- 13 is a prime number.
- GCF (7; 13) = 1