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Add 63/70 and 20/40

63/70 + 20/40 is 7/5.

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,
    63/70 = 63 × 4/70 × 4 = 252/280
  3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
    20/40 = 20 × 7/40 × 7 = 140/280
  4. Add the two fractions:
    252/280 + 140/280 = 252 + 140/280 = 392/280
  5. 392/280 simplified gives 7/5
  6. So, 63/70 + 20/40 = 7/5
    In mixed form: 12/5

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