Add 70/7 and 81/80
1st number: 10 0/7, 2nd number: 1 1/80
70/7 + 81/80 is 881/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 7 × 80 = 560,
70/7 = 70 × 80/7 × 80 = 5600/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
81/80 = 81 × 7/80 × 7 = 567/560 - Add the two like fractions:
5600/560 + 567/560 = 5600 + 567/560 = 6167/560 - 6167/560 simplified gives 881/80
- So, 70/7 + 81/80 = 881/80
In mixed form: 111/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/14+81/80 70/21+81/80 70/35+81/80 70/49+81/80