Add 35/45 and 81/80
1st number: 35/45, 2nd number: 1 1/80
35/45 + 81/80 is 1289/720.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 45 × 16 = 720,
35/45 = 35 × 16/45 × 16 = 560/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
81/80 = 81 × 9/80 × 9 = 729/720 - Add the two like fractions:
560/720 + 729/720 = 560 + 729/720 = 1289/720 - So, 35/45 + 81/80 = 1289/720
In mixed form: 1569/720
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/45+81/80 35/90+81/80