Add 21/28 and 63/5
1st number: 21/28, 2nd number: 12 3/5
21/28 + 63/5 is 267/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 5 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
21/28 = 21 × 5/28 × 5 = 105/140 - Likewise, for the 2nd fraction, since 5 × 28 = 140,
63/5 = 63 × 28/5 × 28 = 1764/140 - Add the two like fractions:
105/140 + 1764/140 = 105 + 1764/140 = 1869/140 - 1869/140 simplified gives 267/20
- So, 21/28 + 63/5 = 267/20
In mixed form: 137/20
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