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Add 5/7 and 20/30

5/7 + 20/30 is 29/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 30 is 210
  2. For the 1st fraction, since 7 × 30 = 210,
    5/7 = 5 × 30/7 × 30 = 150/210
  3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
    20/30 = 20 × 7/30 × 7 = 140/210
  4. Add the two fractions:
    150/210 + 140/210 = 150 + 140/210 = 290/210
  5. After reducing the fraction, the answer is 29/21
  6. In mixed form: 18/21

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