Add 30/4 and 72/18
1st number: 7 2/4, 2nd number: 4 0/18
30/4 + 72/18 is 23/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 18 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 4 × 9 = 36,
30/4 = 30 × 9/4 × 9 = 270/36 - Likewise, for the 2nd fraction, since 18 × 2 = 36,
72/18 = 72 × 2/18 × 2 = 144/36 - Add the two like fractions:
270/36 + 144/36 = 270 + 144/36 = 414/36 - 414/36 simplified gives 23/2
- So, 30/4 + 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: 60/4+72/18 30/8+72/18 30/4+72/36 90/4+72/18 30/12+72/18 30/4+72/54 30/20+72/18 30/4+72/90 30/28+72/18