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: 75/90
- The prime factorizations of the numerator and denominator:
- 75 = 3 × 52
- 90 = 2 × 32 × 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 (75; 90) = 3 × 5 = 15
75/90 = (75 ÷ 15)/(90 ÷ 15) = 5/6
The fraction can also be reduced without calculating GCF; factor the numerator and denominator and cross out all the common prime factors:
75/90 = (3 × 52)/(2 × 32 × 5) = ((3 × 52) ÷ (3 × 5))/((2 × 32 × 5) ÷ (3 × 5)) = 5/6
The fraction: 80/96
- 80 = 24 × 5
- 96 = 25 × 3
- GCF (80; 96) = 24 = 16
80/96 = (80 ÷ 16)/(96 ÷ 16) = 5/6
The fraction can also be reduced without calculating GCF; factor the numerator and denominator and cross out all the common prime factors:
80/96 = (24 × 5)/(25 × 3) = ((24 × 5) ÷ 24)/((25 × 3) ÷ 24) = 5/6
The fractions are equal.
This is one of the simplest cases when comparing two fractions.
Not only are the numerators of the fractions equal but their denominators are also equal.
::: The operation of comparing fractions :::
The final answer: