Add 21/56 and 42/40
1st number: 21/56, 2nd number: 1 2/40
21/56 + 42/40 is 57/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
21/56 = 21 × 5/56 × 5 = 105/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
42/40 = 42 × 7/40 × 7 = 294/280 - Add the two like fractions:
105/280 + 294/280 = 105 + 294/280 = 399/280 - 399/280 simplified gives 57/40
- So, 21/56 + 42/40 = 57/40
In mixed form: 117/40
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