Add 21/56 and 40/21
1st number: 21/56, 2nd number: 1 19/21
21/56 + 40/21 is 383/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
21/56 = 21 × 3/56 × 3 = 63/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
40/21 = 40 × 8/21 × 8 = 320/168 - Add the two like fractions:
63/168 + 320/168 = 63 + 320/168 = 383/168 - So, 21/56 + 40/21 = 383/168
In mixed form: 247/168
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