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Add 42/80 and 18/98

42/80 + 18/98 is 1389/1960.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 98 is 3920

    Next, find the equivalent fraction of both fractional numbers with denominator 3920
  2. For the 1st fraction, since 80 × 49 = 3920,
    42/80 = 42 × 49/80 × 49 = 2058/3920
  3. Likewise, for the 2nd fraction, since 98 × 40 = 3920,
    18/98 = 18 × 40/98 × 40 = 720/3920
  4. Add the two like fractions:
    2058/3920 + 720/3920 = 2058 + 720/3920 = 2778/3920
  5. 2778/3920 simplified gives 1389/1960
  6. So, 42/80 + 18/98 = 1389/1960

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