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Add 21/7 and 21/80

1st number: 3 0/7, 2nd number: 21/80

21/7 + 21/80 is 261/80.

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,
    21/7 = 21 × 80/7 × 80 = 1680/560
  3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
    21/80 = 21 × 7/80 × 7 = 147/560
  4. Add the two like fractions:
    1680/560 + 147/560 = 1680 + 147/560 = 1827/560
  5. 1827/560 simplified gives 261/80
  6. So, 21/7 + 21/80 = 261/80
    In mixed form: 321/80

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