Add 45/4 and 64/5
1st number: 11 1/4, 2nd number: 12 4/5
45/4 + 64/5 is 481/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 5 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
45/4 = 45 × 5/4 × 5 = 225/20 - Likewise, for the 2nd fraction, since 5 × 4 = 20,
64/5 = 64 × 4/5 × 4 = 256/20 - Add the two like fractions:
225/20 + 256/20 = 225 + 256/20 = 481/20 - So, 45/4 + 64/5 = 481/20
In mixed form: 241/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/4+64/5 45/8+64/5 45/4+64/10 45/12+64/5 45/4+64/15 45/20+64/5 45/4+64/25 45/28+64/5 45/4+64/35