Add 15/42 and 20/24
15/42 + 20/24 is 25/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 24 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 42 × 4 = 168,
15/42 = 15 × 4/42 × 4 = 60/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
20/24 = 20 × 7/24 × 7 = 140/168 - Add the two like fractions:
60/168 + 140/168 = 60 + 140/168 = 200/168 - 200/168 simplified gives 25/21
- So, 15/42 + 20/24 = 25/21
In mixed form: 14/21
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