Add 27/21 and 24/40
1st number: 1 6/21, 2nd number: 24/40
27/21 + 24/40 is 66/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 21 × 40 = 840,
27/21 = 27 × 40/21 × 40 = 1080/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
24/40 = 24 × 21/40 × 21 = 504/840 - Add the two like fractions:
1080/840 + 504/840 = 1080 + 504/840 = 1584/840 - 1584/840 simplified gives 66/35
- So, 27/21 + 24/40 = 66/35
In mixed form: 131/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/21+24/40 27/21+48/40 27/42+24/40 27/21+24/80 81/21+24/40 27/21+72/40 27/63+24/40