# How to reduce (simplify) to lowest terms ordinary (common) math fraction 39/155?

## Rewrite the fraction:

39/155 =
39 ÷ 155 =
0.251612903226
0.25

### As a percentage:

0.251612903226 =
0.251612903226 × 100/100 =
25.161290322581/100 =
25.161290322581% ≈
25.16%

## Latest reduced (simplified) fractions

 39/155 already reduced (simplified) to lowest terms Feb 23 19:38 UTC (GMT) 21/70 = (21 ÷ 7)/(70 ÷ 7) = 3/10 Feb 23 19:38 UTC (GMT) 1,583/1,000 already reduced (simplified) to lowest terms 1,583 > 1,000 => improper fraction Rewrite: 1,583 ÷ 1,000 = 1 and remainder = 583 => 1,583/1,000 = (1 × 1,000 + 583)/1,000 = 1 + 583/1,000 = = 1 583/1,000, mixed number (mixed fraction) Feb 23 19:38 UTC (GMT) 20/50 = (20 ÷ 10)/(50 ÷ 10) = 2/5 Feb 23 19:38 UTC (GMT) 615/3 = (615 ÷ 3)/(3 ÷ 3) = 205 Feb 23 19:38 UTC (GMT) 34/7 already reduced (simplified) to lowest terms 34 > 7 => improper fraction Rewrite: 34 ÷ 7 = 4 and remainder = 6 => 34/7 = (4 × 7 + 6)/7 = 4 + 6/7 = = 4 6/7, mixed number (mixed fraction) Feb 23 19:38 UTC (GMT) 9/18 = (9 ÷ 9)/(18 ÷ 9) = 1/2 Feb 23 19:38 UTC (GMT) 20/5 = (20 ÷ 5)/(5 ÷ 5) = 4 Feb 23 19:38 UTC (GMT) 169/12 already reduced (simplified) to lowest terms 169 > 12 => improper fraction Rewrite: 169 ÷ 12 = 14 and remainder = 1 => 169/12 = (14 × 12 + 1)/12 = 14 + 1/12 = = 14 1/12, mixed number (mixed fraction) Feb 23 19:38 UTC (GMT) 45/403 already reduced (simplified) to lowest terms Feb 23 19:38 UTC (GMT) 34/51 = (34 ÷ 17)/(51 ÷ 17) = 2/3 Feb 23 19:38 UTC (GMT) 180/117 = (180 ÷ 9)/(117 ÷ 9) = 20/13; 20 > 13 => improper fraction Rewrite: 20 ÷ 13 = 1 and remainder = 7 => 20/13 = (1 × 13 + 7)/13 = 1 + 7/13 = = 1 7/13, mixed number (mixed fraction) Feb 23 19:38 UTC (GMT) 8,850,000/66,670,000 = (8,850,000 ÷ 590,000)/(66,670,000 ÷ 590,000) = 15/113 Feb 23 19:38 UTC (GMT) reduced fractions, see more...

## Tutoring: simplifying ordinary math fractions (reducing to the lowest terms)

### Steps to simplify an ordinary fraction, to reduce it to its lowest terms:

• 1) Factor both the numerator and the denominator of the fraction into prime factors.
• 2) Calculate the greatest common factor, GCF (or the greatest common divisor, GCD) of the fraction's numerator and denominator.
• 3) Divide both the numerator and the denominator of the fraction by the greatest common factor, GCF (GCD).
• In conclusion: the fraction thus obtained is called a reduced fraction or a fraction simplified to its lowest terms.
• A fraction reduced to its lowest terms cannot be further reduced and it is called an irreducible fraction.

### Why reducing (simplifying) fractions to lower terms?

• When running operations with fractions we are often required to bring them to the same denominator, for example when adding, subtracting or comparing.
• Sometimes both the numerators and the denominators of those fractions are large numbers and doing calculations with such numbers could be difficult.
• By simplifying (reducing) a fraction, both the numerator and denominator of a fraction are reduced to smaller values. Well, these values are much easier to work with, reducing the overall effort of working with fractions.