Add 21/63 and 30/56
21/63 + 30/56 is 73/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 56 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 63 × 8 = 504,
21/63 = 21 × 8/63 × 8 = 168/504 - Likewise, for the 2nd fraction, since 56 × 9 = 504,
30/56 = 30 × 9/56 × 9 = 270/504 - Add the two like fractions:
168/504 + 270/504 = 168 + 270/504 = 438/504 - 438/504 simplified gives 73/84
- So, 21/63 + 30/56 = 73/84
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