Add 42/30 and 18/81
1st number: 1 12/30, 2nd number: 18/81
42/30 + 18/81 is 73/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 81 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 30 × 27 = 810,
42/30 = 42 × 27/30 × 27 = 1134/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
18/81 = 18 × 10/81 × 10 = 180/810 - Add the two like fractions:
1134/810 + 180/810 = 1134 + 180/810 = 1314/810 - 1314/810 simplified gives 73/45
- So, 42/30 + 18/81 = 73/45
In mixed form: 128/45
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