Add 72/20 and 2/10
1st number: 3 12/20, 2nd number: 2/10
72/20 + 2/10 is 19/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 10 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 20 × 1 = 20,
72/20 = 72 × 1/20 × 1 = 72/20 - Likewise, for the 2nd fraction, since 10 × 2 = 20,
2/10 = 2 × 2/10 × 2 = 4/20 - Add the two like fractions:
72/20 + 4/20 = 72 + 4/20 = 76/20 - 76/20 simplified gives 19/5
- So, 72/20 + 2/10 = 19/5
In mixed form: 34/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/20+4/10 72/40+2/10 72/20+2/20 72/20+6/10 72/60+2/10 72/20+2/30 72/20+2/50 72/20+14/10 72/20+2/70