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: 198/288
- The prime factorizations of the numerator and denominator:
- 198 = 2 × 32 × 11
- 288 = 25 × 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 (198; 288) = 2 × 32 = 18
198/288 = (198 ÷ 18)/(288 ÷ 18) = 11/16
The fraction can also be reduced without calculating GCF; factor the numerator and denominator and cross out all the common prime factors:
198/288 = (2 × 32 × 11)/(25 × 32) = ((2 × 32 × 11) ÷ (2 × 32))/((25 × 32) ÷ (2 × 32)) = 11/16
The fraction: 210/331
210/331 is already reduced to the lowest terms.
The numerator and denominator have no common prime factors:
- 210 = 2 × 3 × 5 × 7
- 331 is a prime number.
- GCF (210; 331) = 1
The fraction: 197/303
197/303 is already reduced to the lowest terms.
The numerator and denominator have no common prime factors:
- 197 is a prime number.
- 303 = 3 × 101
- GCF (197; 303) = 1
The fraction: 191/338
191/338 is already reduced to the lowest terms.
The numerator and denominator have no common prime factors:
- 191 is a prime number.
- 338 = 2 × 132
- GCF (191; 338) = 1
The fraction: 190/406
- 190 = 2 × 5 × 19
- 406 = 2 × 7 × 29
- GCF (190; 406) = 2
190/406 = (190 ÷ 2)/(406 ÷ 2) = 95/203
The fraction can also be reduced without calculating GCF; factor the numerator and denominator and cross out all the common prime factors:
190/406 = (2 × 5 × 19)/(2 × 7 × 29) = ((2 × 5 × 19) ÷ 2)/((2 × 7 × 29) ÷ 2) = 95/203
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:
11 is a prime number.
210 = 2 × 3 × 5 × 7
197 is a prime number.
191 is a prime number.
95 = 5 × 19
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 (11, 210, 197, 191, 95) = 2 × 3 × 5 × 7 × 11 × 19 × 191 × 197 = 1,651,449,030
Calculate the expanding number of each fraction:
Divide the LCM by the numerator of each fraction.
11/16 ⟶ 1,651,449,030 ÷ 11 = (2 × 3 × 5 × 7 × 11 × 19 × 191 × 197) ÷ 11 = 150,131,730
210/331 ⟶ 1,651,449,030 ÷ 210 = (2 × 3 × 5 × 7 × 11 × 19 × 191 × 197) ÷ (2 × 3 × 5 × 7) = 7,864,043
197/303 ⟶ 1,651,449,030 ÷ 197 = (2 × 3 × 5 × 7 × 11 × 19 × 191 × 197) ÷ 197 = 8,382,990
191/338 ⟶ 1,651,449,030 ÷ 191 = (2 × 3 × 5 × 7 × 11 × 19 × 191 × 197) ÷ 191 = 8,646,330
95/203 ⟶ 1,651,449,030 ÷ 95 = (2 × 3 × 5 × 7 × 11 × 19 × 191 × 197) ÷ (5 × 19) = 17,383,674
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:
11/16 = (150,131,730 × 11)/(150,131,730 × 16) = 1,651,449,030/2,402,107,680
210/331 = (7,864,043 × 210)/(7,864,043 × 331) = 1,651,449,030/2,602,998,233
197/303 = (8,382,990 × 197)/(8,382,990 × 303) = 1,651,449,030/2,540,045,970
191/338 = (8,646,330 × 191)/(8,646,330 × 338) = 1,651,449,030/2,922,459,540
95/203 = (17,383,674 × 95)/(17,383,674 × 203) = 1,651,449,030/3,528,885,822