Add 81/40 and 27/70
1st number: 2 1/40, 2nd number: 27/70
81/40 + 27/70 is 135/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 70 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
81/40 = 81 × 7/40 × 7 = 567/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
27/70 = 27 × 4/70 × 4 = 108/280 - Add the two like fractions:
567/280 + 108/280 = 567 + 108/280 = 675/280 - 675/280 simplified gives 135/56
- So, 81/40 + 27/70 = 135/56
In mixed form: 223/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/40+54/70 81/80+27/70 81/40+81/70