Add 20/63 and 12/21
20/63 + 12/21 is 8/9.
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,
20/63 = 20 × 1/63 × 1 = 20/63 - Likewise, for the 2nd fraction, since 21 × 3 = 63,
12/21 = 12 × 3/21 × 3 = 36/63 - Add the two like fractions:
20/63 + 36/63 = 20 + 36/63 = 56/63 - 56/63 simplified gives 8/9
- So, 20/63 + 12/21 = 8/9
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