Add 70/28 and 1/81
1st number: 2 14/28, 2nd number: 1/81
70/28 + 1/81 is 407/162.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 81 is 2268
Next, find the equivalent fraction of both fractional numbers with denominator 2268 - For the 1st fraction, since 28 × 81 = 2268,
70/28 = 70 × 81/28 × 81 = 5670/2268 - Likewise, for the 2nd fraction, since 81 × 28 = 2268,
1/81 = 1 × 28/81 × 28 = 28/2268 - Add the two like fractions:
5670/2268 + 28/2268 = 5670 + 28/2268 = 5698/2268 - 5698/2268 simplified gives 407/162
- So, 70/28 + 1/81 = 407/162
In mixed form: 283/162
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/28+2/81 70/56+1/81 70/28+3/81 70/84+1/81 70/28+5/81 70/28+7/81