Add 21/63 and 9/84
21/63 + 9/84 is 37/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 84 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 84 × 3 = 252,
9/84 = 9 × 3/84 × 3 = 27/252 - Add the two like fractions:
84/252 + 27/252 = 84 + 27/252 = 111/252 - 111/252 simplified gives 37/84
- So, 21/63 + 9/84 = 37/84
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