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Add 3/40 and 56/70

3/40 + 56/70 is 7/8.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 70 is 280
  2. For the 1st fraction, since 40 × 7 = 280,
    3/40 = 3 × 7/40 × 7 = 21/280
  3. Likewise, for the 2nd fraction, since 70 × 4 = 280,
    56/70 = 56 × 4/70 × 4 = 224/280
  4. Add the two fractions:
    21/280 + 224/280 = 21 + 224/280 = 245/280
  5. After reducing the fraction, the answer is 7/8

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