Add 30/20 and 7/81
1st number: 1 10/20, 2nd number: 7/81
30/20 + 7/81 is 257/162.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 81 is 1620
Next, find the equivalent fraction of both fractional numbers with denominator 1620 - For the 1st fraction, since 20 × 81 = 1620,
30/20 = 30 × 81/20 × 81 = 2430/1620 - Likewise, for the 2nd fraction, since 81 × 20 = 1620,
7/81 = 7 × 20/81 × 20 = 140/1620 - Add the two like fractions:
2430/1620 + 140/1620 = 2430 + 140/1620 = 2570/1620 - 2570/1620 simplified gives 257/162
- So, 30/20 + 7/81 = 257/162
In mixed form: 195/162
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