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Add 21/45 and 2/70

21/45 + 2/70 is 52/105.

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,
    21/45 = 21 × 14/45 × 14 = 294/630
  3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
    2/70 = 2 × 9/70 × 9 = 18/630
  4. Add the two fractions:
    294/630 + 18/630 = 294 + 18/630 = 312/630
  5. 312/630 simplified gives 52/105
  6. So, 21/45 + 2/70 = 52/105

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