Add 18/3 and 42/45
1st number: 6 0/3, 2nd number: 42/45
18/3 + 42/45 is 104/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 3 × 15 = 45,
18/3 = 18 × 15/3 × 15 = 270/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
42/45 = 42 × 1/45 × 1 = 42/45 - Add the two like fractions:
270/45 + 42/45 = 270 + 42/45 = 312/45 - 312/45 simplified gives 104/15
- So, 18/3 + 42/45 = 104/15
In mixed form: 614/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/3+42/45 18/3+84/45 18/6+42/45 18/3+42/90 54/3+42/45 18/9+42/45 90/3+42/45 18/15+42/45 18/21+42/45