Add 20/5 and 80/28
1st number: 4 0/5, 2nd number: 2 24/28
20/5 + 80/28 is 48/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 5 × 28 = 140,
20/5 = 20 × 28/5 × 28 = 560/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
80/28 = 80 × 5/28 × 5 = 400/140 - Add the two like fractions:
560/140 + 400/140 = 560 + 400/140 = 960/140 - 960/140 simplified gives 48/7
- So, 20/5 + 80/28 = 48/7
In mixed form: 66/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/5+80/28 20/10+80/28 20/5+80/56 60/5+80/28 20/15+80/28 20/5+80/84 20/25+80/28 20/35+80/28