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Add 21/8 and 25/90

1st number: 2 5/8, 2nd number: 25/90

21/8 + 25/90 is 209/72.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 90 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 8 × 45 = 360,
    21/8 = 21 × 45/8 × 45 = 945/360
  3. Likewise, for the 2nd fraction, since 90 × 4 = 360,
    25/90 = 25 × 4/90 × 4 = 100/360
  4. Add the two like fractions:
    945/360 + 100/360 = 945 + 100/360 = 1045/360
  5. 1045/360 simplified gives 209/72
  6. So, 21/8 + 25/90 = 209/72
    In mixed form: 265/72

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