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Add 30/45 and 21/70

30/45 + 21/70 is 29/30.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 70 is 630
  2. For the 1st fraction, since 45 × 14 = 630,
    30/45 = 30 × 14/45 × 14 = 420/630
  3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
    21/70 = 21 × 9/70 × 9 = 189/630
  4. Add the two fractions:
    420/630 + 189/630 = 420 + 189/630 = 609/630
  5. After reducing the fraction, the answer is 29/30

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