Add 54/63 and 20/12
1st number: 54/63, 2nd number: 1 8/12
54/63 + 20/12 is 53/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 12 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 63 × 4 = 252,
54/63 = 54 × 4/63 × 4 = 216/252 - Likewise, for the 2nd fraction, since 12 × 21 = 252,
20/12 = 20 × 21/12 × 21 = 420/252 - Add the two like fractions:
216/252 + 420/252 = 216 + 420/252 = 636/252 - 636/252 simplified gives 53/21
- So, 54/63 + 20/12 = 53/21
In mixed form: 211/21
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