Add 21/5 and 18/64
1st number: 4 1/5, 2nd number: 18/64
21/5 + 18/64 is 717/160.
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,
18/64 = 18 × 5/64 × 5 = 90/320 - Add the two like fractions:
1344/320 + 90/320 = 1344 + 90/320 = 1434/320 - 1434/320 simplified gives 717/160
- So, 21/5 + 18/64 = 717/160
In mixed form: 477/160
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/5+18/64 21/5+36/64 21/10+18/64 63/5+18/64 21/5+54/64 21/15+18/64 21/5+90/64 21/25+18/64 21/35+18/64