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Add 28/70 and 81/8

1st number: 28/70, 2nd number: 10 1/8

28/70 + 81/8 is 421/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 8 is 280

    Next, find the equivalent fraction of both fractional numbers with denominator 280
  2. For the 1st fraction, since 70 × 4 = 280,
    28/70 = 28 × 4/70 × 4 = 112/280
  3. Likewise, for the 2nd fraction, since 8 × 35 = 280,
    81/8 = 81 × 35/8 × 35 = 2835/280
  4. Add the two like fractions:
    112/280 + 2835/280 = 112 + 2835/280 = 2947/280
  5. 2947/280 simplified gives 421/40
  6. So, 28/70 + 81/8 = 421/40
    In mixed form: 1021/40

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