Add 21/60 and 20/54
21/60 + 20/54 is 389/540.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 54 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 60 × 9 = 540,
21/60 = 21 × 9/60 × 9 = 189/540 - Likewise, for the 2nd fraction, since 54 × 10 = 540,
20/54 = 20 × 10/54 × 10 = 200/540 - Add the two like fractions:
189/540 + 200/540 = 189 + 200/540 = 389/540 - So, 21/60 + 20/54 = 389/540
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