Add 98/54 and 15/21
1st number: 1 44/54, 2nd number: 15/21
98/54 + 15/21 is 478/189.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 21 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
98/54 = 98 × 7/54 × 7 = 686/378 - Likewise, for the 2nd fraction, since 21 × 18 = 378,
15/21 = 15 × 18/21 × 18 = 270/378 - Add the two like fractions:
686/378 + 270/378 = 686 + 270/378 = 956/378 - 956/378 simplified gives 478/189
- So, 98/54 + 15/21 = 478/189
In mixed form: 2100/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/54+30/21 98/54+15/42 98/54+45/21 98/54+15/63 98/54+75/21