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Add 70/80 and 40/75

70/80 + 40/75 is 169/120.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 75 is 1200

    Next, find the equivalent fraction of both fractional numbers with denominator 1200
  2. For the 1st fraction, since 80 × 15 = 1200,
    70/80 = 70 × 15/80 × 15 = 1050/1200
  3. Likewise, for the 2nd fraction, since 75 × 16 = 1200,
    40/75 = 40 × 16/75 × 16 = 640/1200
  4. Add the two like fractions:
    1050/1200 + 640/1200 = 1050 + 640/1200 = 1690/1200
  5. 1690/1200 simplified gives 169/120
  6. So, 70/80 + 40/75 = 169/120
    In mixed form: 149/120

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