Add 54/56 and 42/20
1st number: 54/56, 2nd number: 2 2/20
54/56 + 42/20 is 429/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 20 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
54/56 = 54 × 5/56 × 5 = 270/280 - Likewise, for the 2nd fraction, since 20 × 14 = 280,
42/20 = 42 × 14/20 × 14 = 588/280 - Add the two like fractions:
270/280 + 588/280 = 270 + 588/280 = 858/280 - 858/280 simplified gives 429/140
- So, 54/56 + 42/20 = 429/140
In mixed form: 39/140
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