Add 21/4 and 45/16
1st number: 5 1/4, 2nd number: 2 13/16
21/4 + 45/16 is 129/16.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 16 is 16
Next, find the equivalent fraction of both fractional numbers with denominator 16 - For the 1st fraction, since 4 × 4 = 16,
21/4 = 21 × 4/4 × 4 = 84/16 - Likewise, for the 2nd fraction, since 16 × 1 = 16,
45/16 = 45 × 1/16 × 1 = 45/16 - Add the two like fractions:
84/16 + 45/16 = 84 + 45/16 = 129/16 - So, 21/4 + 45/16 = 129/16
In mixed form: 81/16
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