Add 84/21 and 2/54
1st number: 4 0/21, 2nd number: 2/54
84/21 + 2/54 is 109/27.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 21 × 18 = 378,
84/21 = 84 × 18/21 × 18 = 1512/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
2/54 = 2 × 7/54 × 7 = 14/378 - Add the two like fractions:
1512/378 + 14/378 = 1512 + 14/378 = 1526/378 - 1526/378 simplified gives 109/27
- So, 84/21 + 2/54 = 109/27
In mixed form: 41/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/21+4/54 84/42+2/54 84/21+6/54 84/63+2/54 84/21+10/54 84/21+14/54