Add 28/63 and 21/12
1st number: 28/63, 2nd number: 1 9/12
28/63 + 21/12 is 79/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 12 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 63 × 4 = 252,
28/63 = 28 × 4/63 × 4 = 112/252 - Likewise, for the 2nd fraction, since 12 × 21 = 252,
21/12 = 21 × 21/12 × 21 = 441/252 - Add the two like fractions:
112/252 + 441/252 = 112 + 441/252 = 553/252 - 553/252 simplified gives 79/36
- So, 28/63 + 21/12 = 79/36
In mixed form: 27/36
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