Add 72/10 and 5/15
1st number: 7 2/10, 2nd number: 5/15
72/10 + 5/15 is 113/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 15 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 10 × 3 = 30,
72/10 = 72 × 3/10 × 3 = 216/30 - Likewise, for the 2nd fraction, since 15 × 2 = 30,
5/15 = 5 × 2/15 × 2 = 10/30 - Add the two like fractions:
216/30 + 10/30 = 216 + 10/30 = 226/30 - 226/30 simplified gives 113/15
- So, 72/10 + 5/15 = 113/15
In mixed form: 78/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/10+10/15 72/20+5/15 72/10+5/30 72/30+5/15 72/10+5/45 72/10+25/15 72/50+5/15 72/10+5/75 72/10+35/15 72/70+5/15