Add 8/20 and 28/7
1st number: 8/20, 2nd number: 4 0/7
8/20 + 28/7 is 22/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 7 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
8/20 = 8 × 7/20 × 7 = 56/140 - Likewise, for the 2nd fraction, since 7 × 20 = 140,
28/7 = 28 × 20/7 × 20 = 560/140 - Add the two like fractions:
56/140 + 560/140 = 56 + 560/140 = 616/140 - 616/140 simplified gives 22/5
- So, 8/20 + 28/7 = 22/5
In mixed form: 42/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/20+28/7 8/20+56/7 8/40+28/7 8/20+28/14 24/20+28/7 8/20+84/7 8/60+28/7 8/20+28/21 40/20+28/7 8/20+28/35 56/20+28/7 8/20+28/49