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: - 72/18
- The prime factorizations of the numerator and denominator:
- 72 = 23 × 32
- 18 = 2 × 32
- 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 (72; 18) = 2 × 32 = 18
- 72/18 = - (72 ÷ 18)/(18 ÷ 18) = - 4/1 = - 4
The fraction can also be reduced without calculating GCF; factor the numerator and denominator and cross out all the common prime factors:
- 72/18 = - (23 × 32)/(2 × 32) = - ((23 × 32) ÷ (2 × 32))/((2 × 32) ÷ (2 × 32)) = - 4/1 = - 4
The fraction: - 76/24
- 76 = 22 × 19
- 24 = 23 × 3
- GCF (76; 24) = 22 = 4
- 76/24 = - (76 ÷ 4)/(24 ÷ 4) = - 19/6
The fraction can also be reduced without calculating GCF; factor the numerator and denominator and cross out all the common prime factors:
- 76/24 = - (22 × 19)/(23 × 3) = - ((22 × 19) ÷ 22)/((23 × 3) ÷ 22) = - 19/6