Add 81/15 and 30/28
1st number: 5 6/15, 2nd number: 1 2/28
81/15 + 30/28 is 453/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 15 × 28 = 420,
81/15 = 81 × 28/15 × 28 = 2268/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
30/28 = 30 × 15/28 × 15 = 450/420 - Add the two like fractions:
2268/420 + 450/420 = 2268 + 450/420 = 2718/420 - 2718/420 simplified gives 453/70
- So, 81/15 + 30/28 = 453/70
In mixed form: 633/70
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