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: 215/430
- The prime factorizations of the numerator and denominator:
- 215 = 5 × 43
- 430 = 2 × 5 × 43
- 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 (215; 430) = 5 × 43 = 215
215/430 = (215 ÷ 215)/(430 ÷ 215) = 1/2
The fraction can also be reduced without calculating GCF; factor the numerator and denominator and cross out all the common prime factors:
215/430 = (5 × 43)/(2 × 5 × 43) = ((5 × 43) ÷ (5 × 43))/((2 × 5 × 43) ÷ (5 × 43)) = 1/2
The fraction: 219/433
219/433 is already reduced to the lowest terms.
The numerator and denominator have no common prime factors:
- 219 = 3 × 73
- 433 is a prime number.
- GCF (219; 433) = 1