Add 63/21 and 3/80
1st number: 3 0/21, 2nd number: 3/80
63/21 + 3/80 is 243/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 21 × 80 = 1680,
63/21 = 63 × 80/21 × 80 = 5040/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
3/80 = 3 × 21/80 × 21 = 63/1680 - Add the two like fractions:
5040/1680 + 63/1680 = 5040 + 63/1680 = 5103/1680 - 5103/1680 simplified gives 243/80
- So, 63/21 + 3/80 = 243/80
In mixed form: 33/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/21+6/80 63/42+3/80 63/21+9/80 63/21+15/80 63/21+21/80