Add 21/20 and 30/81
1st number: 1 1/20, 2nd number: 30/81
21/20 + 30/81 is 767/540.
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,
21/20 = 21 × 81/20 × 81 = 1701/1620 - Likewise, for the 2nd fraction, since 81 × 20 = 1620,
30/81 = 30 × 20/81 × 20 = 600/1620 - Add the two like fractions:
1701/1620 + 600/1620 = 1701 + 600/1620 = 2301/1620 - 2301/1620 simplified gives 767/540
- So, 21/20 + 30/81 = 767/540
In mixed form: 1227/540
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