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Add 21/70 and 9/5

1st number: 21/70, 2nd number: 1 4/5

21/70 + 9/5 is 21/10.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 5 is 70
  2. For the 1st fraction, since 70 × 1 = 70,
    21/70 = 21 × 1/70 × 1 = 21/70
  3. Likewise, for the 2nd fraction, since 5 × 14 = 70,
    9/5 = 9 × 14/5 × 14 = 126/70
  4. Add the two fractions:
    21/70 + 126/70 = 21 + 126/70 = 147/70
  5. After reducing the fraction, the answer is 21/10
  6. In mixed form: 21/10

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