Add 81/40 and 56/35
1st number: 2 1/40, 2nd number: 1 21/35
81/40 + 56/35 is 29/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 35 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 35 × 8 = 280,
56/35 = 56 × 8/35 × 8 = 448/280 - Add the two like fractions:
567/280 + 448/280 = 567 + 448/280 = 1015/280 - 1015/280 simplified gives 29/8
- So, 81/40 + 56/35 = 29/8
In mixed form: 35/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/80+56/35 81/40+56/70