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Add 90/20 and 30/40

1st number: 4 10/20, 2nd number: 30/40

90/20 + 30/40 is 21/4.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 40 is 40

    Next, find the equivalent fraction of both fractional numbers with denominator 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 40 × 1 = 40,
    30/40 = 30 × 1/40 × 1 = 30/40
  4. Add the two like fractions:
    180/40 + 30/40 = 180 + 30/40 = 210/40
  5. 210/40 simplified gives 21/4
  6. So, 90/20 + 30/40 = 21/4
    In mixed form: 51/4

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