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Add 40/42 and 84/90

40/42 + 84/90 is 66/35.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 90 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 42 × 15 = 630,
    40/42 = 40 × 15/42 × 15 = 600/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    84/90 = 84 × 7/90 × 7 = 588/630
  4. Add the two like fractions:
    600/630 + 588/630 = 600 + 588/630 = 1188/630
  5. 1188/630 simplified gives 66/35
  6. So, 40/42 + 84/90 = 66/35
    In mixed form: 131/35

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