Add 21/5 and 9/64
1st number: 4 1/5, 2nd number: 9/64
21/5 + 9/64 is 1389/320.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 64 is 320
Next, find the equivalent fraction of both fractional numbers with denominator 320 - For the 1st fraction, since 5 × 64 = 320,
21/5 = 21 × 64/5 × 64 = 1344/320 - Likewise, for the 2nd fraction, since 64 × 5 = 320,
9/64 = 9 × 5/64 × 5 = 45/320 - Add the two like fractions:
1344/320 + 45/320 = 1344 + 45/320 = 1389/320 - So, 21/5 + 9/64 = 1389/320
In mixed form: 4109/320
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/5+9/64 21/5+18/64 21/10+9/64 63/5+9/64 21/5+27/64 21/15+9/64 21/5+45/64 21/25+9/64 21/5+63/64 21/35+9/64