Add 42/12 and 20/81
1st number: 3 6/12, 2nd number: 20/81
42/12 + 20/81 is 607/162.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 81 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 12 × 27 = 324,
42/12 = 42 × 27/12 × 27 = 1134/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
20/81 = 20 × 4/81 × 4 = 80/324 - Add the two like fractions:
1134/324 + 80/324 = 1134 + 80/324 = 1214/324 - 1214/324 simplified gives 607/162
- So, 42/12 + 20/81 = 607/162
In mixed form: 3121/162
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