Add 48/45 and 21/12
1st number: 1 3/45, 2nd number: 1 9/12
48/45 + 21/12 is 169/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
48/45 = 48 × 4/45 × 4 = 192/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
21/12 = 21 × 15/12 × 15 = 315/180 - Add the two like fractions:
192/180 + 315/180 = 192 + 315/180 = 507/180 - 507/180 simplified gives 169/60
- So, 48/45 + 21/12 = 169/60
In mixed form: 249/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/45+21/12 48/45+42/12 48/90+21/12 48/45+21/24 48/45+63/12 48/45+21/36 48/45+21/60 48/45+21/84