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Add 63/70 and 9/40

63/70 + 9/40 is 9/8.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 40 is 280

    Next, find the equivalent fraction of both fractional numbers with denominator 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,
    9/40 = 9 × 7/40 × 7 = 63/280
  4. Add the two like fractions:
    252/280 + 63/280 = 252 + 63/280 = 315/280
  5. 315/280 simplified gives 9/8
  6. So, 63/70 + 9/40 = 9/8
    In mixed form: 11/8

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