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Add 90/15 and 70/20

1st number: 6 0/15, 2nd number: 3 10/20

90/15 + 70/20 is 19/2.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 20 is 60
  2. For the 1st fraction, since 15 × 4 = 60,
    90/15 = 90 × 4/15 × 4 = 360/60
  3. Likewise, for the 2nd fraction, since 20 × 3 = 60,
    70/20 = 70 × 3/20 × 3 = 210/60
  4. Add the two fractions:
    360/60 + 210/60 = 360 + 210/60 = 570/60
  5. 570/60 simplified gives 19/2
  6. So, 90/15 + 70/20 = 19/2
    In mixed form: 91/2

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