Add 20/63 and 21/49
20/63 + 21/49 is 47/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 49 is 441
Next, find the equivalent fraction of both fractional numbers with denominator 441 - For the 1st fraction, since 63 × 7 = 441,
20/63 = 20 × 7/63 × 7 = 140/441 - Likewise, for the 2nd fraction, since 49 × 9 = 441,
21/49 = 21 × 9/49 × 9 = 189/441 - Add the two like fractions:
140/441 + 189/441 = 140 + 189/441 = 329/441 - 329/441 simplified gives 47/63
- So, 20/63 + 21/49 = 47/63
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