Add 42/63 and 20/54
42/63 + 20/54 is 28/27.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 63 × 6 = 378,
42/63 = 42 × 6/63 × 6 = 252/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
20/54 = 20 × 7/54 × 7 = 140/378 - Add the two like fractions:
252/378 + 140/378 = 252 + 140/378 = 392/378 - 392/378 simplified gives 28/27
- So, 42/63 + 20/54 = 28/27
In mixed form: 11/27
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