Add 18/20 and 21/54
18/20 + 21/54 is 58/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 54 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 20 × 27 = 540,
18/20 = 18 × 27/20 × 27 = 486/540 - Likewise, for the 2nd fraction, since 54 × 10 = 540,
21/54 = 21 × 10/54 × 10 = 210/540 - Add the two like fractions:
486/540 + 210/540 = 486 + 210/540 = 696/540 - 696/540 simplified gives 58/45
- So, 18/20 + 21/54 = 58/45
In mixed form: 113/45
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