Add 81/70 and 14/80
1st number: 1 11/70, 2nd number: 14/80
81/70 + 14/80 is 373/280.
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,
81/70 = 81 × 8/70 × 8 = 648/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
14/80 = 14 × 7/80 × 7 = 98/560 - Add the two like fractions:
648/560 + 98/560 = 648 + 98/560 = 746/560 - 746/560 simplified gives 373/280
- So, 81/70 + 14/80 = 373/280
In mixed form: 193/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/70+28/80 81/70+42/80 81/70+70/80 81/70+98/80