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Add 45/49 and 70/80

45/49 + 70/80 is 703/392.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 49 and 80 is 3920

    Next, find the equivalent fraction of both fractional numbers with denominator 3920
  2. For the 1st fraction, since 49 × 80 = 3920,
    45/49 = 45 × 80/49 × 80 = 3600/3920
  3. Likewise, for the 2nd fraction, since 80 × 49 = 3920,
    70/80 = 70 × 49/80 × 49 = 3430/3920
  4. Add the two like fractions:
    3600/3920 + 3430/3920 = 3600 + 3430/3920 = 7030/3920
  5. 7030/3920 simplified gives 703/392
  6. So, 45/49 + 70/80 = 703/392
    In mixed form: 1311/392

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