Add 48/45 and 21/18
1st number: 1 3/45, 2nd number: 1 3/18
48/45 + 21/18 is 67/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
48/45 = 48 × 2/45 × 2 = 96/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
21/18 = 21 × 5/18 × 5 = 105/90 - Add the two like fractions:
96/90 + 105/90 = 96 + 105/90 = 201/90 - 201/90 simplified gives 67/30
- So, 48/45 + 21/18 = 67/30
In mixed form: 27/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/45+21/18 48/45+42/18 48/90+21/18 48/45+21/36 48/45+63/18 48/45+21/54 48/45+21/90