Add 54/42 and 4/81
1st number: 1 12/42, 2nd number: 4/81
54/42 + 4/81 is 757/567.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 81 is 1134
Next, find the equivalent fraction of both fractional numbers with denominator 1134 - For the 1st fraction, since 42 × 27 = 1134,
54/42 = 54 × 27/42 × 27 = 1458/1134 - Likewise, for the 2nd fraction, since 81 × 14 = 1134,
4/81 = 4 × 14/81 × 14 = 56/1134 - Add the two like fractions:
1458/1134 + 56/1134 = 1458 + 56/1134 = 1514/1134 - 1514/1134 simplified gives 757/567
- So, 54/42 + 4/81 = 757/567
In mixed form: 1190/567
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/42+8/81 54/84+4/81 54/42+12/81 54/42+20/81 54/42+28/81