Add 21/48 and 70/9
1st number: 21/48, 2nd number: 7 7/9
21/48 + 70/9 is 1183/144.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 9 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 48 × 3 = 144,
21/48 = 21 × 3/48 × 3 = 63/144 - Likewise, for the 2nd fraction, since 9 × 16 = 144,
70/9 = 70 × 16/9 × 16 = 1120/144 - Add the two like fractions:
63/144 + 1120/144 = 63 + 1120/144 = 1183/144 - So, 21/48 + 70/9 = 1183/144
In mixed form: 831/144
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/48+70/9 21/96+70/9 21/48+70/18 63/48+70/9 21/48+70/27 21/48+70/45 21/48+70/63