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Add 90/40 and 30/90

1st number: 2 10/40, 2nd number: 30/90

90/40 + 30/90 is 31/12.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 90 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 40 × 9 = 360,
    90/40 = 90 × 9/40 × 9 = 810/360
  3. Likewise, for the 2nd fraction, since 90 × 4 = 360,
    30/90 = 30 × 4/90 × 4 = 120/360
  4. Add the two like fractions:
    810/360 + 120/360 = 810 + 120/360 = 930/360
  5. 930/360 simplified gives 31/12
  6. So, 90/40 + 30/90 = 31/12
    In mixed form: 27/12

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