Add 63/80 and 25/18
1st number: 63/80, 2nd number: 1 7/18
63/80 + 25/18 is 1567/720.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 18 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
63/80 = 63 × 9/80 × 9 = 567/720 - Likewise, for the 2nd fraction, since 18 × 40 = 720,
25/18 = 25 × 40/18 × 40 = 1000/720 - Add the two like fractions:
567/720 + 1000/720 = 567 + 1000/720 = 1567/720 - So, 63/80 + 25/18 = 1567/720
In mixed form: 2127/720
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/80+50/18 63/80+25/36 63/80+75/18 63/80+25/54 63/80+25/90