Add 49/21 and 7/42
1st number: 2 7/21, 2nd number: 7/42
49/21 + 7/42 is 5/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
49/21 = 49 × 2/21 × 2 = 98/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
7/42 = 7 × 1/42 × 1 = 7/42 - Add the two like fractions:
98/42 + 7/42 = 98 + 7/42 = 105/42 - 105/42 simplified gives 5/2
- So, 49/21 + 7/42 = 5/2
In mixed form: 21/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/21+7/42 49/21+14/42 49/42+7/42 49/21+7/84 49/21+21/42 49/63+7/42 49/21+35/42 49/21+49/42