Add 15/12 and 49/70
1st number: 1 3/12, 2nd number: 49/70
15/12 + 49/70 is 39/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 12 × 35 = 420,
15/12 = 15 × 35/12 × 35 = 525/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
49/70 = 49 × 6/70 × 6 = 294/420 - Add the two like fractions:
525/420 + 294/420 = 525 + 294/420 = 819/420 - 819/420 simplified gives 39/20
- So, 15/12 + 49/70 = 39/20
In mixed form: 119/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/12+49/70 15/12+98/70 15/24+49/70 45/12+49/70 15/36+49/70 75/12+49/70 15/60+49/70 15/84+49/70