Add 54/6 and 3/21
1st number: 9 0/6, 2nd number: 3/21
54/6 + 3/21 is 64/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
54/6 = 54 × 7/6 × 7 = 378/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
3/21 = 3 × 2/21 × 2 = 6/42 - Add the two like fractions:
378/42 + 6/42 = 378 + 6/42 = 384/42 - 384/42 simplified gives 64/7
- So, 54/6 + 3/21 = 64/7
In mixed form: 91/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/6+6/21 54/12+3/21 54/6+3/42 54/6+9/21 54/18+3/21 54/6+3/63 54/6+15/21 54/30+3/21 54/42+3/21