Add 40/21 and 7/48
1st number: 1 19/21, 2nd number: 7/48
40/21 + 7/48 is 689/336.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 48 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 21 × 16 = 336,
40/21 = 40 × 16/21 × 16 = 640/336 - Likewise, for the 2nd fraction, since 48 × 7 = 336,
7/48 = 7 × 7/48 × 7 = 49/336 - Add the two like fractions:
640/336 + 49/336 = 640 + 49/336 = 689/336 - So, 40/21 + 7/48 = 689/336
In mixed form: 217/336
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/21+7/48 40/21+14/48 40/42+7/48 40/21+7/96 40/21+21/48 40/63+7/48 40/21+35/48 40/21+49/48