Add 63/20 and 9/8
1st number: 3 3/20, 2nd number: 1 1/8
63/20 + 9/8 is 171/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 20 × 2 = 40,
63/20 = 63 × 2/20 × 2 = 126/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
9/8 = 9 × 5/8 × 5 = 45/40 - Add the two like fractions:
126/40 + 45/40 = 126 + 45/40 = 171/40 - So, 63/20 + 9/8 = 171/40
In mixed form: 411/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/20+18/8 63/40+9/8 63/20+9/16 63/20+27/8 63/60+9/8 63/20+9/24 63/20+45/8 63/20+9/40 63/20+63/8 63/20+9/56