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: - 680/5
- The prime factorizations of the numerator and denominator:
- 680 = 23 × 5 × 17
- 5 is a prime number.
- 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 (680; 5) = 5
- 680/5 = - (680 ÷ 5)/(5 ÷ 5) = - 136/1 = - 136
The fraction can also be reduced without calculating GCF; factor the numerator and denominator and cross out all the common prime factors:
- 680/5 = - (23 × 5 × 17)/5 = - ((23 × 5 × 17) ÷ 5)/(5 ÷ 5) = - 136/1 = - 136
The fraction: - 682/8
- 682 = 2 × 11 × 31
- 8 = 23
- GCF (682; 8) = 2
- 682/8 = - (682 ÷ 2)/(8 ÷ 2) = - 341/4
The fraction can also be reduced without calculating GCF; factor the numerator and denominator and cross out all the common prime factors:
- 682/8 = - (2 × 11 × 31)/23 = - ((2 × 11 × 31) ÷ 2)/(23 ÷ 2) = - 341/4