Add 21/63 and 28/20
1st number: 21/63, 2nd number: 1 8/20
21/63 + 28/20 is 26/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 20 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 63 × 20 = 1260,
21/63 = 21 × 20/63 × 20 = 420/1260 - Likewise, for the 2nd fraction, since 20 × 63 = 1260,
28/20 = 28 × 63/20 × 63 = 1764/1260 - Add the two like fractions:
420/1260 + 1764/1260 = 420 + 1764/1260 = 2184/1260 - 2184/1260 simplified gives 26/15
- So, 21/63 + 28/20 = 26/15
In mixed form: 111/15
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