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Add 5/7 and 6/20

5/7 + 6/20 is 71/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 20 is 140
  2. For the 1st fraction, since 7 × 20 = 140,
    5/7 = 5 × 20/7 × 20 = 100/140
  3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
    6/20 = 6 × 7/20 × 7 = 42/140
  4. Add the two fractions:
    100/140 + 42/140 = 100 + 42/140 = 142/140
  5. After reducing the fraction, the answer is 71/70
  6. In mixed form: 11/70

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