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Add 7/20 and 7/8

7/20 + 7/8 is 49/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 8 is 40

    Next, find the equivalent fraction of both fractional numbers with denominator 40
  2. For the 1st fraction, since 20 × 2 = 40,
    7/20 = 7 × 2/20 × 2 = 14/40
  3. Likewise, for the 2nd fraction, since 8 × 5 = 40,
    7/8 = 7 × 5/8 × 5 = 35/40
  4. Add the two like fractions:
    14/40 + 35/40 = 14 + 35/40 = 49/40
  5. So, 7/20 + 7/8 = 49/40
    In mixed form: 19/40

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