Add 18/28 and 81/15
1st number: 18/28, 2nd number: 5 6/15
18/28 + 81/15 is 423/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 15 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
18/28 = 18 × 15/28 × 15 = 270/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
81/15 = 81 × 28/15 × 28 = 2268/420 - Add the two like fractions:
270/420 + 2268/420 = 270 + 2268/420 = 2538/420 - 2538/420 simplified gives 423/70
- So, 18/28 + 81/15 = 423/70
In mixed form: 63/70
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