Add 20/5 and 72/45
1st number: 4 0/5, 2nd number: 1 27/45
20/5 + 72/45 is 28/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 5 × 9 = 45,
20/5 = 20 × 9/5 × 9 = 180/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
72/45 = 72 × 1/45 × 1 = 72/45 - Add the two like fractions:
180/45 + 72/45 = 180 + 72/45 = 252/45 - 252/45 simplified gives 28/5
- So, 20/5 + 72/45 = 28/5
In mixed form: 53/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/5+72/45 20/10+72/45 20/5+72/90 60/5+72/45 20/15+72/45 20/25+72/45 20/35+72/45