21/81 Simplified
What is 21/81 Simplified?
7/27 is the simplified fraction of 21/81.
Simplifying Fraction 21/81 using GCF
The first way to simplify the fraction 21/81 is to use the Greatest Common Factor (GCF) of our numerator [21] and denominator [81].
GCF of 21 and 81 is 3
And then divide both the numerator [21] and denominator [81] by the GCF [3].
Simplifying Fraction 21/81 using Prime Factors
Another method to reduce the fraction 21/81 to its simplest form is to use the Prime Factors of numerator [21] and denominator [81].
Prime Factors of 21: 3,7
Prime Factors of 81: 3,3,3,3
Now we can write down a new fraction expressed by its Prime Factors and cancel common factors in numerator and denominator:
Simplifying Fraction 21/81 by Dividing by the Smallest Possible Number
In order to simplify our fraction we can start dividing both the numerator [21] and denominator [81] by the smallest possible number (2,3,4,5... and so on), and repeat this until it is impossible to divide without a reminder.
Related Calculations
<a href="https://calculat.io/en/number/fraction-simplified/21--81">What is 21/81 Simplified to Simplest Form? - Calculatio</a>
Fraction Simplification Table
| Fraction | Lowest Terms |
|---|---|
| 21/66 | 7/22 |
| 21/67 | 21/67 |
| 21/68 | 21/68 |
| 21/69 | 7/23 |
| 21/70 | 3/10 |
| 21/71 | 21/71 |
| 21/72 | 7/24 |
| 21/73 | 21/73 |
| 21/74 | 21/74 |
| 21/75 | 7/25 |
| 21/76 | 21/76 |
| 21/77 | 3/11 |
| 21/78 | 7/26 |
| 21/79 | 21/79 |
| 21/80 | 21/80 |
| 21/81 | 7/27 |
| 21/82 | 21/82 |
| 21/83 | 21/83 |
| 21/84 | 1/4 (¼) |
| 21/85 | 21/85 |
| 21/86 | 21/86 |
| 21/87 | 7/29 |
| 21/88 | 21/88 |
| 21/89 | 21/89 |
| 21/90 | 7/30 |
| 21/91 | 3/13 |
| 21/92 | 21/92 |
| 21/93 | 7/31 |
| 21/94 | 21/94 |
| 21/95 | 21/95 |