Add 8/84 and 21/5
1st number: 8/84, 2nd number: 4 1/5
8/84 + 21/5 is 451/105.
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,
8/84 = 8 × 5/84 × 5 = 40/420 - Likewise, for the 2nd fraction, since 5 × 84 = 420,
21/5 = 21 × 84/5 × 84 = 1764/420 - Add the two like fractions:
40/420 + 1764/420 = 40 + 1764/420 = 1804/420 - 1804/420 simplified gives 451/105
- So, 8/84 + 21/5 = 451/105
In mixed form: 431/105
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