Add 18/12 and 63/45
1st number: 1 6/12, 2nd number: 1 18/45
18/12 + 63/45 is 29/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
18/12 = 18 × 15/12 × 15 = 270/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
63/45 = 63 × 4/45 × 4 = 252/180 - Add the two like fractions:
270/180 + 252/180 = 270 + 252/180 = 522/180 - 522/180 simplified gives 29/10
- So, 18/12 + 63/45 = 29/10
In mixed form: 29/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/12+63/45 18/24+63/45 18/12+63/90 54/12+63/45 18/36+63/45 90/12+63/45 18/60+63/45 18/84+63/45