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Add 10/15 and 40/90

10/15 + 40/90 is 10/9.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 90 is 90
  2. For the 1st fraction, since 15 × 6 = 90,
    10/15 = 10 × 6/15 × 6 = 60/90
  3. Likewise, for the 2nd fraction, since 90 × 1 = 90,
    40/90 = 40 × 1/90 × 1 = 40/90
  4. Add the two fractions:
    60/90 + 40/90 = 60 + 40/90 = 100/90
  5. 100/90 simplified gives 10/9
  6. So, 10/15 + 40/90 = 10/9
    In mixed form: 11/9

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