Add 54/7 and 3/9
1st number: 7 5/7, 2nd number: 3/9
54/7 + 3/9 is 169/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 7 × 9 = 63,
54/7 = 54 × 9/7 × 9 = 486/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
3/9 = 3 × 7/9 × 7 = 21/63 - Add the two like fractions:
486/63 + 21/63 = 486 + 21/63 = 507/63 - 507/63 simplified gives 169/21
- So, 54/7 + 3/9 = 169/21
In mixed form: 81/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/7+6/9 54/14+3/9 54/7+3/18 54/21+3/9 54/7+3/27 54/7+15/9 54/35+3/9 54/7+3/45 54/7+21/9 54/49+3/9 54/7+3/63