Add 21/4 and 40/54
1st number: 5 1/4, 2nd number: 40/54
21/4 + 40/54 is 647/108.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 54 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 4 × 27 = 108,
21/4 = 21 × 27/4 × 27 = 567/108 - Likewise, for the 2nd fraction, since 54 × 2 = 108,
40/54 = 40 × 2/54 × 2 = 80/108 - Add the two like fractions:
567/108 + 80/108 = 567 + 80/108 = 647/108 - So, 21/4 + 40/54 = 647/108
In mixed form: 5107/108
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