Add 54/20 and 21/40
1st number: 2 14/20, 2nd number: 21/40
54/20 + 21/40 is 129/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 20 × 2 = 40,
54/20 = 54 × 2/20 × 2 = 108/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
21/40 = 21 × 1/40 × 1 = 21/40 - Add the two like fractions:
108/40 + 21/40 = 108 + 21/40 = 129/40 - So, 54/20 + 21/40 = 129/40
In mixed form: 39/40
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