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Add 90/20 and 72/8

1st number: 4 10/20, 2nd number: 9 0/8

90/20 + 72/8 is 27/2.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 8 is 40
  2. For the 1st fraction, since 20 × 2 = 40,
    90/20 = 90 × 2/20 × 2 = 180/40
  3. Likewise, for the 2nd fraction, since 8 × 5 = 40,
    72/8 = 72 × 5/8 × 5 = 360/40
  4. Add the two fractions:
    180/40 + 360/40 = 180 + 360/40 = 540/40
  5. After reducing the fraction, the answer is 27/2
  6. In mixed form: 131/2

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