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Add 20/12 and 63/90

1st number: 1 8/12, 2nd number: 63/90

20/12 + 63/90 is 71/30.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 90 is 180
  2. For the 1st fraction, since 12 × 15 = 180,
    20/12 = 20 × 15/12 × 15 = 300/180
  3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
    63/90 = 63 × 2/90 × 2 = 126/180
  4. Add the two fractions:
    300/180 + 126/180 = 300 + 126/180 = 426/180
  5. 426/180 simplified gives 71/30
  6. So, 20/12 + 63/90 = 71/30
    In mixed form: 211/30

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