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Add 90/6 and 21/20

1st number: 15 0/6, 2nd number: 1 1/20

90/6 + 21/20 is 321/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 6 and 20 is 60
  2. For the 1st fraction, since 6 × 10 = 60,
    90/6 = 90 × 10/6 × 10 = 900/60
  3. Likewise, for the 2nd fraction, since 20 × 3 = 60,
    21/20 = 21 × 3/20 × 3 = 63/60
  4. Add the two fractions:
    900/60 + 63/60 = 900 + 63/60 = 963/60
  5. 963/60 simplified gives 321/20
  6. So, 90/6 + 21/20 = 321/20
    In mixed form: 161/20

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