Add 15/40 and 30/28
1st number: 15/40, 2nd number: 1 2/28
15/40 + 30/28 is 81/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 28 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 28 × 10 = 280,
30/28 = 30 × 10/28 × 10 = 300/280 - Add the two like fractions:
105/280 + 300/280 = 105 + 300/280 = 405/280 - 405/280 simplified gives 81/56
- So, 15/40 + 30/28 = 81/56
In mixed form: 125/56
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