Add 81/15 and 42/45
1st number: 5 6/15, 2nd number: 42/45
81/15 + 42/45 is 19/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 15 × 3 = 45,
81/15 = 81 × 3/15 × 3 = 243/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
42/45 = 42 × 1/45 × 1 = 42/45 - Add the two like fractions:
243/45 + 42/45 = 243 + 42/45 = 285/45 - 285/45 simplified gives 19/3
- So, 81/15 + 42/45 = 19/3
In mixed form: 61/3
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