Add 84/4 and 21/40
1st number: 21 0/4, 2nd number: 21/40
84/4 + 21/40 is 861/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 4 × 10 = 40,
84/4 = 84 × 10/4 × 10 = 840/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
21/40 = 21 × 1/40 × 1 = 21/40 - Add the two like fractions:
840/40 + 21/40 = 840 + 21/40 = 861/40 - So, 84/4 + 21/40 = 861/40
In mixed form: 2121/40
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