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Add 20/25 and 42/90

20/25 + 42/90 is 19/15.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 25 and 90 is 450

    Next, find the equivalent fraction of both fractional numbers with denominator 450
  2. For the 1st fraction, since 25 × 18 = 450,
    20/25 = 20 × 18/25 × 18 = 360/450
  3. Likewise, for the 2nd fraction, since 90 × 5 = 450,
    42/90 = 42 × 5/90 × 5 = 210/450
  4. Add the two like fractions:
    360/450 + 210/450 = 360 + 210/450 = 570/450
  5. 570/450 simplified gives 19/15
  6. So, 20/25 + 42/90 = 19/15
    In mixed form: 14/15

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