Add 42/21 and 81/24
1st number: 2 0/21, 2nd number: 3 9/24
42/21 + 81/24 is 43/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 24 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
42/21 = 42 × 8/21 × 8 = 336/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
81/24 = 81 × 7/24 × 7 = 567/168 - Add the two like fractions:
336/168 + 567/168 = 336 + 567/168 = 903/168 - 903/168 simplified gives 43/8
- So, 42/21 + 81/24 = 43/8
In mixed form: 53/8
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