Add 12/48 and 84/21
1st number: 12/48, 2nd number: 4 0/21
12/48 + 84/21 is 17/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 21 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 48 × 7 = 336,
12/48 = 12 × 7/48 × 7 = 84/336 - Likewise, for the 2nd fraction, since 21 × 16 = 336,
84/21 = 84 × 16/21 × 16 = 1344/336 - Add the two like fractions:
84/336 + 1344/336 = 84 + 1344/336 = 1428/336 - 1428/336 simplified gives 17/4
- So, 12/48 + 84/21 = 17/4
In mixed form: 41/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/48+84/21 12/96+84/21 12/48+84/42 36/48+84/21 12/48+84/63 60/48+84/21 84/48+84/21