Add 72/18 and 42/3
1st number: 4 0/18, 2nd number: 14 0/3
72/18 + 42/3 is 18/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 3 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 18 × 1 = 18,
72/18 = 72 × 1/18 × 1 = 72/18 - Likewise, for the 2nd fraction, since 3 × 6 = 18,
42/3 = 42 × 6/3 × 6 = 252/18 - Add the two like fractions:
72/18 + 252/18 = 72 + 252/18 = 324/18 - 324/18 simplified gives 18/1
- So, 72/18 + 42/3 = 18/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/18+84/3 72/36+42/3 72/18+42/6 72/54+42/3 72/18+42/9 72/90+42/3 72/18+42/15 72/18+42/21