Add 35/21 and 8/72
1st number: 1 14/21, 2nd number: 8/72
35/21 + 8/72 is 16/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 21 × 24 = 504,
35/21 = 35 × 24/21 × 24 = 840/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
8/72 = 8 × 7/72 × 7 = 56/504 - Add the two like fractions:
840/504 + 56/504 = 840 + 56/504 = 896/504 - 896/504 simplified gives 16/9
- So, 35/21 + 8/72 = 16/9
In mixed form: 17/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/21+8/72 35/21+16/72 35/42+8/72 35/21+24/72 35/63+8/72 35/21+40/72 35/21+56/72