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Add 42/2 and 15/40

1st number: 21 0/2, 2nd number: 15/40

42/2 + 15/40 is 171/8.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 40 is 40

    Next, find the equivalent fraction of both fractional numbers with denominator 40
  2. For the 1st fraction, since 2 × 20 = 40,
    42/2 = 42 × 20/2 × 20 = 840/40
  3. Likewise, for the 2nd fraction, since 40 × 1 = 40,
    15/40 = 15 × 1/40 × 1 = 15/40
  4. Add the two like fractions:
    840/40 + 15/40 = 840 + 15/40 = 855/40
  5. 855/40 simplified gives 171/8
  6. So, 42/2 + 15/40 = 171/8
    In mixed form: 213/8

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