Add 10/70 and 81/80
1st number: 10/70, 2nd number: 1 1/80
10/70 + 81/80 is 647/560.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 70 × 8 = 560,
10/70 = 10 × 8/70 × 8 = 80/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
81/80 = 81 × 7/80 × 7 = 567/560 - Add the two like fractions:
80/560 + 567/560 = 80 + 567/560 = 647/560 - So, 10/70 + 81/80 = 647/560
In mixed form: 187/560
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/70+81/80 30/70+81/80 50/70+81/80