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Add 90/40 and 60/42

1st number: 2 10/40, 2nd number: 1 18/42

90/40 + 60/42 is 103/28.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 42 is 840

    Next, find the equivalent fraction of both fractional numbers with denominator 840
  2. For the 1st fraction, since 40 × 21 = 840,
    90/40 = 90 × 21/40 × 21 = 1890/840
  3. Likewise, for the 2nd fraction, since 42 × 20 = 840,
    60/42 = 60 × 20/42 × 20 = 1200/840
  4. Add the two like fractions:
    1890/840 + 1200/840 = 1890 + 1200/840 = 3090/840
  5. 3090/840 simplified gives 103/28
  6. So, 90/40 + 60/42 = 103/28
    In mixed form: 319/28

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