Add 56/7 and 20/40
1st number: 8 0/7, 2nd number: 20/40
56/7 + 20/40 is 17/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 7 × 40 = 280,
56/7 = 56 × 40/7 × 40 = 2240/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
20/40 = 20 × 7/40 × 7 = 140/280 - Add the two like fractions:
2240/280 + 140/280 = 2240 + 140/280 = 2380/280 - 2380/280 simplified gives 17/2
- So, 56/7 + 20/40 = 17/2
In mixed form: 81/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/14+20/40 56/7+20/80 56/7+60/40 56/21+20/40 56/35+20/40 56/49+20/40