Add 49/21 and 80/12
1st number: 2 7/21, 2nd number: 6 8/12
49/21 + 80/12 is 9/1.
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,
80/12 = 80 × 7/12 × 7 = 560/84 - Add the two like fractions:
196/84 + 560/84 = 196 + 560/84 = 756/84 - 756/84 simplified gives 9/1
- So, 49/21 + 80/12 = 9/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/21+80/12 49/42+80/12 49/21+80/24 49/63+80/12 49/21+80/36 49/21+80/60 49/21+80/84