Add 15/63 and 6/21
15/63 + 6/21 is 11/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 21 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 63 × 1 = 63,
15/63 = 15 × 1/63 × 1 = 15/63 - Likewise, for the 2nd fraction, since 21 × 3 = 63,
6/21 = 6 × 3/21 × 3 = 18/63 - Add the two like fractions:
15/63 + 18/63 = 15 + 18/63 = 33/63 - 33/63 simplified gives 11/21
- So, 15/63 + 6/21 = 11/21
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