Add 54/15 and 98/40
1st number: 3 9/15, 2nd number: 2 18/40
54/15 + 98/40 is 121/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
54/15 = 54 × 8/15 × 8 = 432/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
98/40 = 98 × 3/40 × 3 = 294/120 - Add the two like fractions:
432/120 + 294/120 = 432 + 294/120 = 726/120 - 726/120 simplified gives 121/20
- So, 54/15 + 98/40 = 121/20
In mixed form: 61/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/30+98/40 54/15+98/80 54/45+98/40 54/75+98/40