Add 18/63 and 10/21
18/63 + 10/21 is 16/21.
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,
18/63 = 18 × 1/63 × 1 = 18/63 - Likewise, for the 2nd fraction, since 21 × 3 = 63,
10/21 = 10 × 3/21 × 3 = 30/63 - Add the two like fractions:
18/63 + 30/63 = 18 + 30/63 = 48/63 - 48/63 simplified gives 16/21
- So, 18/63 + 10/21 = 16/21
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