Add 50/70 and 81/40
1st number: 50/70, 2nd number: 2 1/40
50/70 + 81/40 is 767/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
50/70 = 50 × 4/70 × 4 = 200/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
81/40 = 81 × 7/40 × 7 = 567/280 - Add the two like fractions:
200/280 + 567/280 = 200 + 567/280 = 767/280 - So, 50/70 + 81/40 = 767/280
In mixed form: 2207/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/70+81/80