Add 45/12 and 63/72
1st number: 3 9/12, 2nd number: 63/72
45/12 + 63/72 is 37/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 12 × 6 = 72,
45/12 = 45 × 6/12 × 6 = 270/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
63/72 = 63 × 1/72 × 1 = 63/72 - Add the two like fractions:
270/72 + 63/72 = 270 + 63/72 = 333/72 - 333/72 simplified gives 37/8
- So, 45/12 + 63/72 = 37/8
In mixed form: 45/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/12+63/72 45/24+63/72 45/36+63/72 45/60+63/72 45/84+63/72