Add 81/15 and 42/54
1st number: 5 6/15, 2nd number: 42/54
81/15 + 42/54 is 278/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 15 × 18 = 270,
81/15 = 81 × 18/15 × 18 = 1458/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
42/54 = 42 × 5/54 × 5 = 210/270 - Add the two like fractions:
1458/270 + 210/270 = 1458 + 210/270 = 1668/270 - 1668/270 simplified gives 278/45
- So, 81/15 + 42/54 = 278/45
In mixed form: 68/45
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