Add 27/21 and 48/40
1st number: 1 6/21, 2nd number: 1 8/40
27/21 + 48/40 is 87/35.
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,
48/40 = 48 × 21/40 × 21 = 1008/840 - Add the two like fractions:
1080/840 + 1008/840 = 1080 + 1008/840 = 2088/840 - 2088/840 simplified gives 87/35
- So, 27/21 + 48/40 = 87/35
In mixed form: 217/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/21+48/40 27/21+96/40 27/42+48/40 27/21+48/80 81/21+48/40 27/63+48/40