Add 5/7 and 20/8
1st number: 5/7, 2nd number: 2 4/8
5/7 + 20/8 is 45/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 8 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 7 × 8 = 56,
5/7 = 5 × 8/7 × 8 = 40/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
20/8 = 20 × 7/8 × 7 = 140/56 - Add the two like fractions:
40/56 + 140/56 = 40 + 140/56 = 180/56 - 180/56 simplified gives 45/14
- So, 5/7 + 20/8 = 45/14
In mixed form: 33/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/7+20/8 5/7+40/8 5/14+20/8 5/7+20/16 15/7+20/8 5/7+60/8 5/21+20/8 5/7+20/24 25/7+20/8 5/35+20/8 5/7+20/40 35/7+20/8 5/49+20/8 5/7+20/56