Add 15/40 and 81/56
1st number: 15/40, 2nd number: 1 25/56
15/40 + 81/56 is 51/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 56 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
15/40 = 15 × 7/40 × 7 = 105/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
81/56 = 81 × 5/56 × 5 = 405/280 - Add the two like fractions:
105/280 + 405/280 = 105 + 405/280 = 510/280 - 510/280 simplified gives 51/28
- So, 15/40 + 81/56 = 51/28
In mixed form: 123/28
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