Add 9/12 and 50/21
1st number: 9/12, 2nd number: 2 8/21
9/12 + 50/21 is 263/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
9/12 = 9 × 7/12 × 7 = 63/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
50/21 = 50 × 4/21 × 4 = 200/84 - Add the two like fractions:
63/84 + 200/84 = 63 + 200/84 = 263/84 - So, 9/12 + 50/21 = 263/84
In mixed form: 311/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/12+50/21 9/24+50/21 9/12+50/42 27/12+50/21 9/36+50/21 9/12+50/63 45/12+50/21 9/60+50/21 63/12+50/21 9/84+50/21