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: - 178/268
- The prime factorizations of the numerator and denominator:
- 178 = 2 × 89
- 268 = 22 × 67
- 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 (178; 268) = 2
- 178/268 = - (178 ÷ 2)/(268 ÷ 2) = - 89/134
The fraction can also be reduced without calculating GCF; factor the numerator and denominator and cross out all the common prime factors:
- 178/268 = - (2 × 89)/(22 × 67) = - ((2 × 89) ÷ 2)/((22 × 67) ÷ 2) = - 89/134
The fraction: - 166/248
- 166 = 2 × 83
- 248 = 23 × 31
- GCF (166; 248) = 2
- 166/248 = - (166 ÷ 2)/(248 ÷ 2) = - 83/124
The fraction can also be reduced without calculating GCF; factor the numerator and denominator and cross out all the common prime factors:
- 166/248 = - (2 × 83)/(23 × 31) = - ((2 × 83) ÷ 2)/((23 × 31) ÷ 2) = - 83/124
The fraction: - 155/289
- 155/289 is already reduced to the lowest terms.
The numerator and denominator have no common prime factors:
- 155 = 5 × 31
- 289 = 172
- GCF (155; 289) = 1
The fraction: - 163/329
- 163/329 is already reduced to the lowest terms.
The numerator and denominator have no common prime factors:
- 163 is a prime number.
- 329 = 7 × 47
- GCF (163; 329) = 1
The fraction: - 173/365
- 173/365 is already reduced to the lowest terms.
The numerator and denominator have no common prime factors:
- 173 is a prime number.
- 365 = 5 × 73
- GCF (173; 365) = 1
Calculate the common numerator
The common numerator is nothing else than the least common multiple (LCM) of the numerators of the fractions.
To calculate the LCM, we need the prime factorization of the numerators:
89 is a prime number.
83 is a prime number.
155 = 5 × 31
163 is a prime number.
173 is a prime number.
Multiply all the unique prime factors: if there are repeating prime factors we only take them once, and only the ones having the highest exponent (the highest powers).
LCM (89, 83, 155, 163, 173) = 5 × 31 × 83 × 89 × 163 × 173 = 32,287,432,015
Calculate the expanding number of each fraction:
Divide the LCM by the numerator of each fraction.
- 89/134 ⟶ 32,287,432,015 ÷ 89 = (5 × 31 × 83 × 89 × 163 × 173) ÷ 89 = 362,780,135
- 83/124 ⟶ 32,287,432,015 ÷ 83 = (5 × 31 × 83 × 89 × 163 × 173) ÷ 83 = 389,005,205
- 155/289 ⟶ 32,287,432,015 ÷ 155 = (5 × 31 × 83 × 89 × 163 × 173) ÷ (5 × 31) = 208,306,013
- 163/329 ⟶ 32,287,432,015 ÷ 163 = (5 × 31 × 83 × 89 × 163 × 173) ÷ 163 = 198,082,405
- 173/365 ⟶ 32,287,432,015 ÷ 173 = (5 × 31 × 83 × 89 × 163 × 173) ÷ 173 = 186,632,555
Make the numerators of the fractions the same:
- Expand each fraction: multiply both its numerator and denominator by its corresponding expanding number, calculated above.
- This way all the fractions will have the same numerator:
- 89/134 = - (362,780,135 × 89)/(362,780,135 × 134) = - 32,287,432,015/48,612,538,090
- 83/124 = - (389,005,205 × 83)/(389,005,205 × 124) = - 32,287,432,015/48,236,645,420
- 155/289 = - (208,306,013 × 155)/(208,306,013 × 289) = - 32,287,432,015/60,200,437,757
- 163/329 = - (198,082,405 × 163)/(198,082,405 × 329) = - 32,287,432,015/65,169,111,245
- 173/365 = - (186,632,555 × 173)/(186,632,555 × 365) = - 32,287,432,015/68,120,882,575