Add 81/84 and 54/63
81/84 + 54/63 is 51/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 63 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
81/84 = 81 × 3/84 × 3 = 243/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
54/63 = 54 × 4/63 × 4 = 216/252 - Add the two like fractions:
243/252 + 216/252 = 243 + 216/252 = 459/252 - 459/252 simplified gives 51/28
- So, 81/84 + 54/63 = 51/28
In mixed form: 123/28
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