Add 32/28 and 7/21
1st number: 1 4/28, 2nd number: 7/21
32/28 + 7/21 is 31/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
32/28 = 32 × 3/28 × 3 = 96/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
7/21 = 7 × 4/21 × 4 = 28/84 - Add the two like fractions:
96/84 + 28/84 = 96 + 28/84 = 124/84 - 124/84 simplified gives 31/21
- So, 32/28 + 7/21 = 31/21
In mixed form: 110/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 64/28+7/21 32/28+14/21 32/56+7/21 32/28+7/42 96/28+7/21 32/84+7/21 32/28+7/63 32/28+35/21 32/28+49/21