Add 21/63 and 12/28
21/63 + 12/28 is 16/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 28 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 63 × 4 = 252,
21/63 = 21 × 4/63 × 4 = 84/252 - Likewise, for the 2nd fraction, since 28 × 9 = 252,
12/28 = 12 × 9/28 × 9 = 108/252 - Add the two like fractions:
84/252 + 108/252 = 84 + 108/252 = 192/252 - 192/252 simplified gives 16/21
- So, 21/63 + 12/28 = 16/21
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