Add 16/81 and 63/42
1st number: 16/81, 2nd number: 1 21/42
16/81 + 63/42 is 275/162.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 42 is 1134
Next, find the equivalent fraction of both fractional numbers with denominator 1134 - For the 1st fraction, since 81 × 14 = 1134,
16/81 = 16 × 14/81 × 14 = 224/1134 - Likewise, for the 2nd fraction, since 42 × 27 = 1134,
63/42 = 63 × 27/42 × 27 = 1701/1134 - Add the two like fractions:
224/1134 + 1701/1134 = 224 + 1701/1134 = 1925/1134 - 1925/1134 simplified gives 275/162
- So, 16/81 + 63/42 = 275/162
In mixed form: 1113/162
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/81+63/42 16/81+63/84 48/81+63/42 80/81+63/42