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Add 21/16 and 8/90

1st number: 1 5/16, 2nd number: 8/90

21/16 + 8/90 is 1009/720.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 16 and 90 is 720

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 16 × 45 = 720,
    21/16 = 21 × 45/16 × 45 = 945/720
  3. Likewise, for the 2nd fraction, since 90 × 8 = 720,
    8/90 = 8 × 8/90 × 8 = 64/720
  4. Add the two like fractions:
    945/720 + 64/720 = 945 + 64/720 = 1009/720
  5. So, 21/16 + 8/90 = 1009/720
    In mixed form: 1289/720

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