Add 63/28 and 50/21
1st number: 2 7/28, 2nd number: 2 8/21
63/28 + 50/21 is 389/84.
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,
63/28 = 63 × 3/28 × 3 = 189/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
50/21 = 50 × 4/21 × 4 = 200/84 - Add the two like fractions:
189/84 + 200/84 = 189 + 200/84 = 389/84 - So, 63/28 + 50/21 = 389/84
In mixed form: 453/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/56+50/21 63/28+50/42 63/84+50/21 63/28+50/63