Add 50/15 and 21/70
1st number: 3 5/15, 2nd number: 21/70
50/15 + 21/70 is 109/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
50/15 = 50 × 14/15 × 14 = 700/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
21/70 = 21 × 3/70 × 3 = 63/210 - Add the two like fractions:
700/210 + 63/210 = 700 + 63/210 = 763/210 - 763/210 simplified gives 109/30
- So, 50/15 + 21/70 = 109/30
In mixed form: 319/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/15+42/70 50/30+21/70 50/15+63/70 50/45+21/70 50/75+21/70