Add 15/30 and 49/40
1st number: 15/30, 2nd number: 1 9/40
15/30 + 49/40 is 69/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
15/30 = 15 × 4/30 × 4 = 60/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
49/40 = 49 × 3/40 × 3 = 147/120 - Add the two like fractions:
60/120 + 147/120 = 60 + 147/120 = 207/120 - 207/120 simplified gives 69/40
- So, 15/30 + 49/40 = 69/40
In mixed form: 129/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 15/30+98/40 15/60+49/40 15/30+49/80 45/30+49/40 15/90+49/40 75/30+49/40