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Add 90/42 and 70/40

1st number: 2 6/42, 2nd number: 1 30/40

90/42 + 70/40 is 109/28.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 40 is 840
  2. For the 1st fraction, since 42 × 20 = 840,
    90/42 = 90 × 20/42 × 20 = 1800/840
  3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
    70/40 = 70 × 21/40 × 21 = 1470/840
  4. Add the two fractions:
    1800/840 + 1470/840 = 1800 + 1470/840 = 3270/840
  5. 3270/840 simplified gives 109/28
  6. So, 90/42 + 70/40 = 109/28
    In mixed form: 325/28

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