Add 15/2 and 72/18
1st number: 7 1/2, 2nd number: 4 0/18
15/2 + 72/18 is 23/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 18 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 2 × 9 = 18,
15/2 = 15 × 9/2 × 9 = 135/18 - Likewise, for the 2nd fraction, since 18 × 1 = 18,
72/18 = 72 × 1/18 × 1 = 72/18 - Add the two like fractions:
135/18 + 72/18 = 135 + 72/18 = 207/18 - 207/18 simplified gives 23/2
- So, 15/2 + 72/18 = 23/2
In mixed form: 111/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/2+72/18 15/4+72/18 15/2+72/36 45/2+72/18 15/6+72/18 15/2+72/54 75/2+72/18 15/10+72/18 15/2+72/90 15/14+72/18