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: 5/33
5/33 is already reduced to the lowest terms.
The numerator and denominator have no common prime factors:
- 5 is a prime number.
- 33 = 3 × 11
- GCF (5; 33) = 1
The fraction: 7/42
- The prime factorizations of the numerator and denominator:
- 7 is a prime number.
- 42 = 2 × 3 × 7
- 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 (7; 42) = 7
7/42 = (7 ÷ 7)/(42 ÷ 7) = 1/6
The fraction can also be reduced without calculating GCF; factor the numerator and denominator and cross out all the common prime factors:
7/42 = 7/(2 × 3 × 7) = (7 ÷ 7)/((2 × 3 × 7) ÷ 7) = 1/6