Add 9/42 and 84/54
1st number: 9/42, 2nd number: 1 30/54
9/42 + 84/54 is 223/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 42 × 9 = 378,
9/42 = 9 × 9/42 × 9 = 81/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
84/54 = 84 × 7/54 × 7 = 588/378 - Add the two like fractions:
81/378 + 588/378 = 81 + 588/378 = 669/378 - 669/378 simplified gives 223/126
- So, 9/42 + 84/54 = 223/126
In mixed form: 197/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/42+84/54 9/84+84/54 27/42+84/54 45/42+84/54 63/42+84/54