Add 70/30 and 20/81
1st number: 2 10/30, 2nd number: 20/81
70/30 + 20/81 is 209/81.
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,
70/30 = 70 × 27/30 × 27 = 1890/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
20/81 = 20 × 10/81 × 10 = 200/810 - Add the two like fractions:
1890/810 + 200/810 = 1890 + 200/810 = 2090/810 - 2090/810 simplified gives 209/81
- So, 70/30 + 20/81 = 209/81
In mixed form: 247/81
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