Add 56/54 and 21/42
1st number: 1 2/54, 2nd number: 21/42
56/54 + 21/42 is 83/54.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 42 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
56/54 = 56 × 7/54 × 7 = 392/378 - Likewise, for the 2nd fraction, since 42 × 9 = 378,
21/42 = 21 × 9/42 × 9 = 189/378 - Add the two like fractions:
392/378 + 189/378 = 392 + 189/378 = 581/378 - 581/378 simplified gives 83/54
- So, 56/54 + 21/42 = 83/54
In mixed form: 129/54
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