Add 42/30 and 12/81
1st number: 1 12/30, 2nd number: 12/81
42/30 + 12/81 is 209/135.
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,
12/81 = 12 × 10/81 × 10 = 120/810 - Add the two like fractions:
1134/810 + 120/810 = 1134 + 120/810 = 1254/810 - 1254/810 simplified gives 209/135
- So, 42/30 + 12/81 = 209/135
In mixed form: 174/135
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