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Add 84/7 and 20/80

1st number: 12 0/7, 2nd number: 20/80

84/7 + 20/80 is 49/4.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 80 is 560

    Next, find the equivalent fraction of both fractional numbers with denominator 560
  2. For the 1st fraction, since 7 × 80 = 560,
    84/7 = 84 × 80/7 × 80 = 6720/560
  3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
    20/80 = 20 × 7/80 × 7 = 140/560
  4. Add the two like fractions:
    6720/560 + 140/560 = 6720 + 140/560 = 6860/560
  5. 6860/560 simplified gives 49/4
  6. So, 84/7 + 20/80 = 49/4
    In mixed form: 121/4

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