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Add 21/25 and 56/90

21/25 + 56/90 is 329/225.

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,
    21/25 = 21 × 18/25 × 18 = 378/450
  3. Likewise, for the 2nd fraction, since 90 × 5 = 450,
    56/90 = 56 × 5/90 × 5 = 280/450
  4. Add the two like fractions:
    378/450 + 280/450 = 378 + 280/450 = 658/450
  5. 658/450 simplified gives 329/225
  6. So, 21/25 + 56/90 = 329/225
    In mixed form: 1104/225

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