Add 21/12 and 40/63
1st number: 1 9/12, 2nd number: 40/63
21/12 + 40/63 is 601/252.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 63 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 12 × 21 = 252,
21/12 = 21 × 21/12 × 21 = 441/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
40/63 = 40 × 4/63 × 4 = 160/252 - Add the two like fractions:
441/252 + 160/252 = 441 + 160/252 = 601/252 - So, 21/12 + 40/63 = 601/252
In mixed form: 297/252
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