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Add 90/16 and 21/40

1st number: 5 10/16, 2nd number: 21/40

90/16 + 21/40 is 123/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 16 and 40 is 80

    Next, find the equivalent fraction of both fractional numbers with denominator 80
  2. For the 1st fraction, since 16 × 5 = 80,
    90/16 = 90 × 5/16 × 5 = 450/80
  3. Likewise, for the 2nd fraction, since 40 × 2 = 80,
    21/40 = 21 × 2/40 × 2 = 42/80
  4. Add the two like fractions:
    450/80 + 42/80 = 450 + 42/80 = 492/80
  5. 492/80 simplified gives 123/20
  6. So, 90/16 + 21/40 = 123/20
    In mixed form: 63/20

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