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Add 28/70 and 3/40

28/70 + 3/40 is 19/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 40 is 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 40 × 7 = 280,
    3/40 = 3 × 7/40 × 7 = 21/280
  4. Add the two fractions:
    112/280 + 21/280 = 112 + 21/280 = 133/280
  5. After reducing the fraction, the answer is 19/40

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