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: 780/10
- The prime factorizations of the numerator and denominator:
- 780 = 22 × 3 × 5 × 13
- 10 = 2 × 5
- 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 (780; 10) = 2 × 5 = 10
780/10 = (780 ÷ 10)/(10 ÷ 10) = 78/1 = 78
The fraction can also be reduced without calculating GCF; factor the numerator and denominator and cross out all the common prime factors:
780/10 = (22 × 3 × 5 × 13)/(2 × 5) = ((22 × 3 × 5 × 13) ÷ (2 × 5))/((2 × 5) ÷ (2 × 5)) = 78/1 = 78
The fraction: 784/19
784/19 is already reduced to the lowest terms.
The numerator and denominator have no common prime factors:
- 784 = 24 × 72
- 19 is a prime number.
- GCF (784; 19) = 1