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: - 105/126
- The prime factorizations of the numerator and denominator:
- 105 = 3 × 5 × 7
- 126 = 2 × 32 × 7
- 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 (105; 126) = 3 × 7 = 21
- 105/126 = - (105 ÷ 21)/(126 ÷ 21) = - 5/6
The fraction can also be reduced without calculating GCF; factor the numerator and denominator and cross out all the common prime factors:
- 105/126 = - (3 × 5 × 7)/(2 × 32 × 7) = - ((3 × 5 × 7) ÷ (3 × 7))/((2 × 32 × 7) ÷ (3 × 7)) = - 5/6
The fraction: - 110/132
- 110 = 2 × 5 × 11
- 132 = 22 × 3 × 11
- GCF (110; 132) = 2 × 11 = 22
- 110/132 = - (110 ÷ 22)/(132 ÷ 22) = - 5/6
The fraction can also be reduced without calculating GCF; factor the numerator and denominator and cross out all the common prime factors:
- 110/132 = - (2 × 5 × 11)/(22 × 3 × 11) = - ((2 × 5 × 11) ÷ (2 × 11))/((22 × 3 × 11) ÷ (2 × 11)) = - 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: