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: 206/27
206/27 is already reduced to the lowest terms.
The numerator and denominator have no common prime factors:
- 206 = 2 × 103
- 27 = 33
- GCF (206; 27) = 1
The fraction: 210/30
- The prime factorizations of the numerator and denominator:
- 210 = 2 × 3 × 5 × 7
- 30 = 2 × 3 × 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 (210; 30) = 2 × 3 × 5 = 30
210/30 = (210 ÷ 30)/(30 ÷ 30) = 7/1 = 7
The fraction can also be reduced without calculating GCF; factor the numerator and denominator and cross out all the common prime factors:
210/30 = (2 × 3 × 5 × 7)/(2 × 3 × 5) = ((2 × 3 × 5 × 7) ÷ (2 × 3 × 5))/((2 × 3 × 5) ÷ (2 × 3 × 5)) = 7/1 = 7