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Add 18/42 and 35/40

18/42 + 35/40 is 73/56.

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,
    18/42 = 18 × 20/42 × 20 = 360/840
  3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
    35/40 = 35 × 21/40 × 21 = 735/840
  4. Add the two fractions:
    360/840 + 735/840 = 360 + 735/840 = 1095/840
  5. 1095/840 simplified gives 73/56
  6. So, 18/42 + 35/40 = 73/56
    In mixed form: 117/56

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