Add 21/12 and 15/63
1st number: 1 9/12, 2nd number: 15/63
21/12 + 15/63 is 167/84.
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,
15/63 = 15 × 4/63 × 4 = 60/252 - Add the two like fractions:
441/252 + 60/252 = 441 + 60/252 = 501/252 - 501/252 simplified gives 167/84
- So, 21/12 + 15/63 = 167/84
In mixed form: 183/84
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