Add 21/63 and 3/7
21/63 + 3/7 is 16/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 7 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 63 × 1 = 63,
21/63 = 21 × 1/63 × 1 = 21/63 - Likewise, for the 2nd fraction, since 7 × 9 = 63,
3/7 = 3 × 9/7 × 9 = 27/63 - Add the two like fractions:
21/63 + 27/63 = 21 + 27/63 = 48/63 - 48/63 simplified gives 16/21
- So, 21/63 + 3/7 = 16/21
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