Add 3/7 and 63/80
3/7 + 63/80 is 681/560.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 7 × 80 = 560,
3/7 = 3 × 80/7 × 80 = 240/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
63/80 = 63 × 7/80 × 7 = 441/560 - Add the two like fractions:
240/560 + 441/560 = 240 + 441/560 = 681/560 - So, 3/7 + 63/80 = 681/560
In mixed form: 1121/560
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/7+63/80 3/14+63/80 9/7+63/80 3/21+63/80 15/7+63/80 3/35+63/80 21/7+63/80 3/49+63/80