Add 72/21 and 5/49
1st number: 3 9/21, 2nd number: 5/49
72/21 + 5/49 is 173/49.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 49 is 147
Next, find the equivalent fraction of both fractional numbers with denominator 147 - For the 1st fraction, since 21 × 7 = 147,
72/21 = 72 × 7/21 × 7 = 504/147 - Likewise, for the 2nd fraction, since 49 × 3 = 147,
5/49 = 5 × 3/49 × 3 = 15/147 - Add the two like fractions:
504/147 + 15/147 = 504 + 15/147 = 519/147 - 519/147 simplified gives 173/49
- So, 72/21 + 5/49 = 173/49
In mixed form: 326/49
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/21+10/49 72/42+5/49 72/21+5/98 72/21+15/49 72/63+5/49 72/21+25/49 72/21+35/49