Add 81/70 and 70/56
1st number: 1 11/70, 2nd number: 1 14/56
81/70 + 70/56 is 337/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 56 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
81/70 = 81 × 4/70 × 4 = 324/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
70/56 = 70 × 5/56 × 5 = 350/280 - Add the two like fractions:
324/280 + 350/280 = 324 + 350/280 = 674/280 - 674/280 simplified gives 337/140
- So, 81/70 + 70/56 = 337/140
In mixed form: 257/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: