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Add 90/20 and 6/72

1st number: 4 10/20, 2nd number: 6/72

90/20 + 6/72 is 55/12.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 72 is 360
  2. For the 1st fraction, since 20 × 18 = 360,
    90/20 = 90 × 18/20 × 18 = 1620/360
  3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
    6/72 = 6 × 5/72 × 5 = 30/360
  4. Add the two fractions:
    1620/360 + 30/360 = 1620 + 30/360 = 1650/360
  5. After reducing the fraction, the answer is 55/12
  6. In mixed form: 47/12

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