Add 9/84 and 64/20
1st number: 9/84, 2nd number: 3 4/20
9/84 + 64/20 is 463/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
9/84 = 9 × 5/84 × 5 = 45/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
64/20 = 64 × 21/20 × 21 = 1344/420 - Add the two like fractions:
45/420 + 1344/420 = 45 + 1344/420 = 1389/420 - 1389/420 simplified gives 463/140
- So, 9/84 + 64/20 = 463/140
In mixed form: 343/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/84+64/20 9/84+64/40 27/84+64/20 9/84+64/60 45/84+64/20 63/84+64/20