Add 81/70 and 50/56
1st number: 1 11/70, 2nd number: 50/56
81/70 + 50/56 is 41/20.
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,
50/56 = 50 × 5/56 × 5 = 250/280 - Add the two like fractions:
324/280 + 250/280 = 324 + 250/280 = 574/280 - 574/280 simplified gives 41/20
- So, 81/70 + 50/56 = 41/20
In mixed form: 21/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: