Add 20/12 and 70/81
1st number: 1 8/12, 2nd number: 70/81
20/12 + 70/81 is 205/81.
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,
20/12 = 20 × 27/12 × 27 = 540/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
70/81 = 70 × 4/81 × 4 = 280/324 - Add the two like fractions:
540/324 + 280/324 = 540 + 280/324 = 820/324 - 820/324 simplified gives 205/81
- So, 20/12 + 70/81 = 205/81
In mixed form: 243/81
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