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Add 90/4 and 21/60

1st number: 22 2/4, 2nd number: 21/60

90/4 + 21/60 is 457/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 60 is 60
  2. For the 1st fraction, since 4 × 15 = 60,
    90/4 = 90 × 15/4 × 15 = 1350/60
  3. Likewise, for the 2nd fraction, since 60 × 1 = 60,
    21/60 = 21 × 1/60 × 1 = 21/60
  4. Add the two fractions:
    1350/60 + 21/60 = 1350 + 21/60 = 1371/60
  5. 1371/60 simplified gives 457/20
  6. So, 90/4 + 21/60 = 457/20
    In mixed form: 2217/20

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