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Add 30/42 and 42/80

30/42 + 42/80 is 347/280.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 80 is 1680

    Next, find the equivalent fraction of both fractional numbers with denominator 1680
  2. For the 1st fraction, since 42 × 40 = 1680,
    30/42 = 30 × 40/42 × 40 = 1200/1680
  3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
    42/80 = 42 × 21/80 × 21 = 882/1680
  4. Add the two like fractions:
    1200/1680 + 882/1680 = 1200 + 882/1680 = 2082/1680
  5. 2082/1680 simplified gives 347/280
  6. So, 30/42 + 42/80 = 347/280
    In mixed form: 167/280

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