Add 30/63 and 21/20
1st number: 30/63, 2nd number: 1 1/20
30/63 + 21/20 is 641/420.
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,
30/63 = 30 × 20/63 × 20 = 600/1260 - Likewise, for the 2nd fraction, since 20 × 63 = 1260,
21/20 = 21 × 63/20 × 63 = 1323/1260 - Add the two like fractions:
600/1260 + 1323/1260 = 600 + 1323/1260 = 1923/1260 - 1923/1260 simplified gives 641/420
- So, 30/63 + 21/20 = 641/420
In mixed form: 1221/420
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