Add 81/28 and 3/42
1st number: 2 25/28, 2nd number: 3/42
81/28 + 3/42 is 83/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
81/28 = 81 × 3/28 × 3 = 243/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
3/42 = 3 × 2/42 × 2 = 6/84 - Add the two like fractions:
243/84 + 6/84 = 243 + 6/84 = 249/84 - 249/84 simplified gives 83/28
- So, 81/28 + 3/42 = 83/28
In mixed form: 227/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/28+6/42 81/56+3/42 81/28+3/84 81/28+9/42 81/84+3/42 81/28+15/42 81/28+21/42