Add 42/24 and 27/21
1st number: 1 18/24, 2nd number: 1 6/21
42/24 + 27/21 is 85/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 24 × 7 = 168,
42/24 = 42 × 7/24 × 7 = 294/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
27/21 = 27 × 8/21 × 8 = 216/168 - Add the two like fractions:
294/168 + 216/168 = 294 + 216/168 = 510/168 - 510/168 simplified gives 85/28
- So, 42/24 + 27/21 = 85/28
In mixed form: 31/28
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