Add 21/63 and 9/56
21/63 + 9/56 is 83/168.
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,
9/56 = 9 × 9/56 × 9 = 81/504 - Add the two like fractions:
168/504 + 81/504 = 168 + 81/504 = 249/504 - 249/504 simplified gives 83/168
- So, 21/63 + 9/56 = 83/168
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