Add 21/63 and 18/56
21/63 + 18/56 is 55/84.
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,
18/56 = 18 × 9/56 × 9 = 162/504 - Add the two like fractions:
168/504 + 162/504 = 168 + 162/504 = 330/504 - 330/504 simplified gives 55/84
- So, 21/63 + 18/56 = 55/84
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