Answers

Add 21/60 and 49/54

21/60 + 49/54 is 679/540.

Steps for adding fractions

1. 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
2. For the 1st fraction, since 60 × 9 = 540,
   21/60 = 21 × 9/60 × 9 = 189/540
3. Likewise, for the 2nd fraction, since 54 × 10 = 540,
   49/54 = 49 × 10/54 × 10 = 490/540
4. Add the two like fractions:
   189/540 + 490/540 = 189 + 490/540 = 679/540
5. So, 21/60 + 49/54 = 679/540
   In mixed form: 1139/540

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