Add 15/7 and 42/81
1st number: 2 1/7, 2nd number: 42/81
15/7 + 42/81 is 503/189.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 81 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 7 × 81 = 567,
15/7 = 15 × 81/7 × 81 = 1215/567 - Likewise, for the 2nd fraction, since 81 × 7 = 567,
42/81 = 42 × 7/81 × 7 = 294/567 - Add the two like fractions:
1215/567 + 294/567 = 1215 + 294/567 = 1509/567 - 1509/567 simplified gives 503/189
- So, 15/7 + 42/81 = 503/189
In mixed form: 2125/189
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