Add 81/10 and 8/7
1st number: 8 1/10, 2nd number: 1 1/7
81/10 + 8/7 is 647/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 7 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 10 × 7 = 70,
81/10 = 81 × 7/10 × 7 = 567/70 - Likewise, for the 2nd fraction, since 7 × 10 = 70,
8/7 = 8 × 10/7 × 10 = 80/70 - Add the two like fractions:
567/70 + 80/70 = 567 + 80/70 = 647/70 - So, 81/10 + 8/7 = 647/70
In mixed form: 917/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/10+16/7 81/20+8/7 81/10+8/14 81/10+24/7 81/30+8/7 81/10+8/21 81/10+40/7 81/50+8/7 81/10+8/35 81/10+56/7 81/70+8/7 81/10+8/49