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Add 40/8 and 9/21

1st number: 5 0/8, 2nd number: 9/21

40/8 + 9/21 is 38/7.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 21 is 168

    Next, find the equivalent fraction of both fractional numbers with denominator 168
  2. For the 1st fraction, since 8 × 21 = 168,
    40/8 = 40 × 21/8 × 21 = 840/168
  3. Likewise, for the 2nd fraction, since 21 × 8 = 168,
    9/21 = 9 × 8/21 × 8 = 72/168
  4. Add the two like fractions:
    840/168 + 72/168 = 840 + 72/168 = 912/168
  5. 912/168 simplified gives 38/7
  6. So, 40/8 + 9/21 = 38/7
    In mixed form: 53/7

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