Add 81/15 and 42/5
1st number: 5 6/15, 2nd number: 8 2/5
81/15 + 42/5 is 69/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 5 is 15
Next, find the equivalent fraction of both fractional numbers with denominator 15 - For the 1st fraction, since 15 × 1 = 15,
81/15 = 81 × 1/15 × 1 = 81/15 - Likewise, for the 2nd fraction, since 5 × 3 = 15,
42/5 = 42 × 3/5 × 3 = 126/15 - Add the two like fractions:
81/15 + 126/15 = 81 + 126/15 = 207/15 - 207/15 simplified gives 69/5
- So, 81/15 + 42/5 = 69/5
In mixed form: 134/5
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