Add 81/84 and 64/5
1st number: 81/84, 2nd number: 12 4/5
81/84 + 64/5 is 1927/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 5 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
81/84 = 81 × 5/84 × 5 = 405/420 - Likewise, for the 2nd fraction, since 5 × 84 = 420,
64/5 = 64 × 84/5 × 84 = 5376/420 - Add the two like fractions:
405/420 + 5376/420 = 405 + 5376/420 = 5781/420 - 5781/420 simplified gives 1927/140
- So, 81/84 + 64/5 = 1927/140
In mixed form: 13107/140
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