Add 20/21 and 54/14
1st number: 20/21, 2nd number: 3 12/14
20/21 + 54/14 is 101/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 14 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
20/21 = 20 × 2/21 × 2 = 40/42 - Likewise, for the 2nd fraction, since 14 × 3 = 42,
54/14 = 54 × 3/14 × 3 = 162/42 - Add the two like fractions:
40/42 + 162/42 = 40 + 162/42 = 202/42 - 202/42 simplified gives 101/21
- So, 20/21 + 54/14 = 101/21
In mixed form: 417/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/21+54/14 20/42+54/14 20/21+54/28 60/21+54/14 20/63+54/14 20/21+54/42 20/21+54/70 20/21+54/98