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Add 84/4 and 8/7

1st number: 21 0/4, 2nd number: 1 1/7

84/4 + 8/7 is 155/7.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 7 is 28

    Next, find the equivalent fraction of both fractional numbers with denominator 28
  2. For the 1st fraction, since 4 × 7 = 28,
    84/4 = 84 × 7/4 × 7 = 588/28
  3. Likewise, for the 2nd fraction, since 7 × 4 = 28,
    8/7 = 8 × 4/7 × 4 = 32/28
  4. Add the two like fractions:
    588/28 + 32/28 = 588 + 32/28 = 620/28
  5. 620/28 simplified gives 155/7
  6. So, 84/4 + 8/7 = 155/7
    In mixed form: 221/7

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