Add 4/5 and 72/20
1st number: 4/5, 2nd number: 3 12/20
4/5 + 72/20 is 22/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 5 × 4 = 20,
4/5 = 4 × 4/5 × 4 = 16/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
72/20 = 72 × 1/20 × 1 = 72/20 - Add the two like fractions:
16/20 + 72/20 = 16 + 72/20 = 88/20 - 88/20 simplified gives 22/5
- So, 4/5 + 72/20 = 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: 8/5+72/20 4/10+72/20 4/5+72/40 12/5+72/20 4/15+72/20 4/5+72/60 20/5+72/20 4/25+72/20 28/5+72/20 4/35+72/20