Add 15/54 and 21/49
15/54 + 21/49 is 89/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 49 is 2646
Next, find the equivalent fraction of both fractional numbers with denominator 2646 - For the 1st fraction, since 54 × 49 = 2646,
15/54 = 15 × 49/54 × 49 = 735/2646 - Likewise, for the 2nd fraction, since 49 × 54 = 2646,
21/49 = 21 × 54/49 × 54 = 1134/2646 - Add the two like fractions:
735/2646 + 1134/2646 = 735 + 1134/2646 = 1869/2646 - 1869/2646 simplified gives 89/126
- So, 15/54 + 21/49 = 89/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/54+21/49 15/54+42/49 15/54+21/98 45/54+21/49 15/54+63/49 75/54+21/49