Add 70/2 and 81/80
1st number: 35 0/2, 2nd number: 1 1/80
70/2 + 81/80 is 2881/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 2 × 40 = 80,
70/2 = 70 × 40/2 × 40 = 2800/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
81/80 = 81 × 1/80 × 1 = 81/80 - Add the two like fractions:
2800/80 + 81/80 = 2800 + 81/80 = 2881/80 - So, 70/2 + 81/80 = 2881/80
In mixed form: 361/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/4+81/80 70/6+81/80 70/10+81/80 70/14+81/80