Add 15/40 and 81/8
1st number: 15/40, 2nd number: 10 1/8
15/40 + 81/8 is 21/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
15/40 = 15 × 1/40 × 1 = 15/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
81/8 = 81 × 5/8 × 5 = 405/40 - Add the two like fractions:
15/40 + 405/40 = 15 + 405/40 = 420/40 - 420/40 simplified gives 21/2
- So, 15/40 + 81/8 = 21/2
In mixed form: 101/2
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