Add 42/28 and 81/15
1st number: 1 14/28, 2nd number: 5 6/15
42/28 + 81/15 is 69/10.
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,
42/28 = 42 × 15/28 × 15 = 630/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
81/15 = 81 × 28/15 × 28 = 2268/420 - Add the two like fractions:
630/420 + 2268/420 = 630 + 2268/420 = 2898/420 - 2898/420 simplified gives 69/10
- So, 42/28 + 81/15 = 69/10
In mixed form: 69/10
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