Add 18/3 and 72/40
1st number: 6 0/3, 2nd number: 1 32/40
18/3 + 72/40 is 39/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 3 × 40 = 120,
18/3 = 18 × 40/3 × 40 = 720/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
72/40 = 72 × 3/40 × 3 = 216/120 - Add the two like fractions:
720/120 + 216/120 = 720 + 216/120 = 936/120 - 936/120 simplified gives 39/5
- So, 18/3 + 72/40 = 39/5
In mixed form: 74/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/3+72/40 18/6+72/40 18/3+72/80 54/3+72/40 18/9+72/40 90/3+72/40 18/15+72/40 18/21+72/40