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: 90/87
- The prime factorizations of the numerator and denominator:
- 90 = 2 × 32 × 5
- 87 = 3 × 29
- 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; 87) = 3
90/87 = (90 ÷ 3)/(87 ÷ 3) = 30/29
The fraction can also be reduced without calculating GCF; factor the numerator and denominator and cross out all the common prime factors:
90/87 = (2 × 32 × 5)/(3 × 29) = ((2 × 32 × 5) ÷ 3)/((3 × 29) ÷ 3) = 30/29
The fraction: 95/95
95/95 = (95 ÷ 95)/(95 ÷ 95) = 1/1 = 1