Add 21/54 and 42/60
21/54 + 42/60 is 49/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 60 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 54 × 10 = 540,
21/54 = 21 × 10/54 × 10 = 210/540 - Likewise, for the 2nd fraction, since 60 × 9 = 540,
42/60 = 42 × 9/60 × 9 = 378/540 - Add the two like fractions:
210/540 + 378/540 = 210 + 378/540 = 588/540 - 588/540 simplified gives 49/45
- So, 21/54 + 42/60 = 49/45
In mixed form: 14/45
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