Add 20/8 and 5/7
1st number: 2 4/8, 2nd number: 5/7
20/8 + 5/7 is 45/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 7 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 8 × 7 = 56,
20/8 = 20 × 7/8 × 7 = 140/56 - Likewise, for the 2nd fraction, since 7 × 8 = 56,
5/7 = 5 × 8/7 × 8 = 40/56 - Add the two like fractions:
140/56 + 40/56 = 140 + 40/56 = 180/56 - 180/56 simplified gives 45/14
- So, 20/8 + 5/7 = 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: 40/8+5/7 20/8+10/7 20/16+5/7 20/8+5/14 60/8+5/7 20/8+15/7 20/24+5/7 20/8+5/21 20/8+25/7 20/40+5/7 20/8+5/35 20/8+35/7 20/56+5/7 20/8+5/49