Add 81/84 and 42/10
1st number: 81/84, 2nd number: 4 2/10
81/84 + 42/10 is 723/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 10 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 10 × 42 = 420,
42/10 = 42 × 42/10 × 42 = 1764/420 - Add the two like fractions:
405/420 + 1764/420 = 405 + 1764/420 = 2169/420 - 2169/420 simplified gives 723/140
- So, 81/84 + 42/10 = 723/140
In mixed form: 523/140
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