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Add 4/70 and 21/45

4/70 + 21/45 is 11/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 45 is 630
  2. For the 1st fraction, since 70 × 9 = 630,
    4/70 = 4 × 9/70 × 9 = 36/630
  3. Likewise, for the 2nd fraction, since 45 × 14 = 630,
    21/45 = 21 × 14/45 × 14 = 294/630
  4. Add the two fractions:
    36/630 + 294/630 = 36 + 294/630 = 330/630
  5. After reducing the fraction, the answer is 11/21

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