Add 63/36 and 42/80
1st number: 1 27/36, 2nd number: 42/80
63/36 + 42/80 is 91/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 36 × 20 = 720,
63/36 = 63 × 20/36 × 20 = 1260/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
42/80 = 42 × 9/80 × 9 = 378/720 - Add the two like fractions:
1260/720 + 378/720 = 1260 + 378/720 = 1638/720 - 1638/720 simplified gives 91/40
- So, 63/36 + 42/80 = 91/40
In mixed form: 211/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/36+84/80 63/72+42/80