Add 81/4 and 27/70
1st number: 20 1/4, 2nd number: 27/70
81/4 + 27/70 is 2889/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 4 × 35 = 140,
81/4 = 81 × 35/4 × 35 = 2835/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
27/70 = 27 × 2/70 × 2 = 54/140 - Add the two like fractions:
2835/140 + 54/140 = 2835 + 54/140 = 2889/140 - So, 81/4 + 27/70 = 2889/140
In mixed form: 2089/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/4+54/70 81/8+27/70 81/4+81/70 81/12+27/70 81/20+27/70 81/28+27/70