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: 90/3
- The prime factorizations of the numerator and denominator:
- 90 = 2 × 32 × 5
- 3 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 (90; 3) = 3
90/3 = (90 ÷ 3)/(3 ÷ 3) = 30/1 = 30
The fraction can also be reduced without calculating GCF; factor the numerator and denominator and cross out all the common prime factors:
90/3 = (2 × 32 × 5)/3 = ((2 × 32 × 5) ÷ 3)/(3 ÷ 3) = 30/1 = 30
The fraction: 97/10
97/10 is already reduced to the lowest terms.
The numerator and denominator have no common prime factors:
- 97 is a prime number.
- 10 = 2 × 5
- GCF (97; 10) = 1