Add 20/42 and 81/56
1st number: 20/42, 2nd number: 1 25/56
20/42 + 81/56 is 323/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 42 × 4 = 168,
20/42 = 20 × 4/42 × 4 = 80/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
81/56 = 81 × 3/56 × 3 = 243/168 - Add the two like fractions:
80/168 + 243/168 = 80 + 243/168 = 323/168 - So, 20/42 + 81/56 = 323/168
In mixed form: 1155/168
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