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Add 15/4 and 42/70

1st number: 3 3/4, 2nd number: 42/70

15/4 + 42/70 is 87/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 70 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 4 × 35 = 140,
    15/4 = 15 × 35/4 × 35 = 525/140
  3. Likewise, for the 2nd fraction, since 70 × 2 = 140,
    42/70 = 42 × 2/70 × 2 = 84/140
  4. Add the two like fractions:
    525/140 + 84/140 = 525 + 84/140 = 609/140
  5. 609/140 simplified gives 87/20
  6. So, 15/4 + 42/70 = 87/20
    In mixed form: 47/20

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