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Add 80/98 and 42/70

80/98 + 42/70 is 347/245.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 98 and 70 is 490

    Next, find the equivalent fraction of both fractional numbers with denominator 490
  2. For the 1st fraction, since 98 × 5 = 490,
    80/98 = 80 × 5/98 × 5 = 400/490
  3. Likewise, for the 2nd fraction, since 70 × 7 = 490,
    42/70 = 42 × 7/70 × 7 = 294/490
  4. Add the two like fractions:
    400/490 + 294/490 = 400 + 294/490 = 694/490
  5. 694/490 simplified gives 347/245
  6. So, 80/98 + 42/70 = 347/245
    In mixed form: 1102/245

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