Add 81/42 and 2/63
1st number: 1 39/42, 2nd number: 2/63
81/42 + 2/63 is 247/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 63 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
81/42 = 81 × 3/42 × 3 = 243/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
2/63 = 2 × 2/63 × 2 = 4/126 - Add the two like fractions:
243/126 + 4/126 = 243 + 4/126 = 247/126 - So, 81/42 + 2/63 = 247/126
In mixed form: 1121/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/42+4/63 81/84+2/63 81/42+6/63 81/42+10/63 81/42+14/63