Add 49/21 and 45/12
1st number: 2 7/21, 2nd number: 3 9/12
49/21 + 45/12 is 73/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
49/21 = 49 × 4/21 × 4 = 196/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
45/12 = 45 × 7/12 × 7 = 315/84 - Add the two like fractions:
196/84 + 315/84 = 196 + 315/84 = 511/84 - 511/84 simplified gives 73/12
- So, 49/21 + 45/12 = 73/12
In mixed form: 61/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/21+45/12 49/21+90/12 49/42+45/12 49/21+45/24 49/63+45/12 49/21+45/36 49/21+45/60 49/21+45/84