Add 40/21 and 2/72
1st number: 1 19/21, 2nd number: 2/72
40/21 + 2/72 is 487/252.
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,
40/21 = 40 × 24/21 × 24 = 960/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
2/72 = 2 × 7/72 × 7 = 14/504 - Add the two like fractions:
960/504 + 14/504 = 960 + 14/504 = 974/504 - 974/504 simplified gives 487/252
- So, 40/21 + 2/72 = 487/252
In mixed form: 1235/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/21+2/72 40/21+4/72 40/42+2/72 40/21+6/72 40/63+2/72 40/21+10/72 40/21+14/72