Add 15/2 and 72/20
1st number: 7 1/2, 2nd number: 3 12/20
15/2 + 72/20 is 111/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 2 × 10 = 20,
15/2 = 15 × 10/2 × 10 = 150/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
72/20 = 72 × 1/20 × 1 = 72/20 - Add the two like fractions:
150/20 + 72/20 = 150 + 72/20 = 222/20 - 222/20 simplified gives 111/10
- So, 15/2 + 72/20 = 111/10
In mixed form: 111/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/2+72/20 15/4+72/20 15/2+72/40 45/2+72/20 15/6+72/20 15/2+72/60 75/2+72/20 15/10+72/20 15/14+72/20