Add 45/8 and 48/20
1st number: 5 5/8, 2nd number: 2 8/20
45/8 + 48/20 is 321/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 20 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 8 × 5 = 40,
45/8 = 45 × 5/8 × 5 = 225/40 - Likewise, for the 2nd fraction, since 20 × 2 = 40,
48/20 = 48 × 2/20 × 2 = 96/40 - Add the two like fractions:
225/40 + 96/40 = 225 + 96/40 = 321/40 - So, 45/8 + 48/20 = 321/40
In mixed form: 81/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/8+48/20 45/8+96/20 45/16+48/20 45/8+48/40 45/24+48/20 45/8+48/60 45/40+48/20 45/56+48/20