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Add 42/20 and 21/54

1st number: 2 2/20, 2nd number: 21/54

42/20 + 21/54 is 112/45.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 54 is 540
  2. For the 1st fraction, since 20 × 27 = 540,
    42/20 = 42 × 27/20 × 27 = 1134/540
  3. Likewise, for the 2nd fraction, since 54 × 10 = 540,
    21/54 = 21 × 10/54 × 10 = 210/540
  4. Add the two fractions:
    1134/540 + 210/540 = 1134 + 210/540 = 1344/540
  5. 1344/540 simplified gives 112/45
  6. So, 42/20 + 21/54 = 112/45
    In mixed form: 222/45

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