Add 21/56 and 42/28
1st number: 21/56, 2nd number: 1 14/28
21/56 + 42/28 is 15/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 28 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 56 × 1 = 56,
21/56 = 21 × 1/56 × 1 = 21/56 - Likewise, for the 2nd fraction, since 28 × 2 = 56,
42/28 = 42 × 2/28 × 2 = 84/56 - Add the two like fractions:
21/56 + 84/56 = 21 + 84/56 = 105/56 - 105/56 simplified gives 15/8
- So, 21/56 + 42/28 = 15/8
In mixed form: 17/8
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