Add 15/40 and 5/28
15/40 + 5/28 is 31/56.
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,
5/28 = 5 × 10/28 × 10 = 50/280 - Add the two like fractions:
105/280 + 50/280 = 105 + 50/280 = 155/280 - 155/280 simplified gives 31/56
- So, 15/40 + 5/28 = 31/56
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