Add 16/21 and 20/63
16/21 + 20/63 is 68/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 63 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 21 × 3 = 63,
16/21 = 16 × 3/21 × 3 = 48/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
20/63 = 20 × 1/63 × 1 = 20/63 - Add the two like fractions:
48/63 + 20/63 = 48 + 20/63 = 68/63 - So, 16/21 + 20/63 = 68/63
In mixed form: 15/63
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