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Add 21/70 and 9/75

21/70 + 9/75 is 21/50.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 75 is 1050
  2. For the 1st fraction, since 70 × 15 = 1050,
    21/70 = 21 × 15/70 × 15 = 315/1050
  3. Likewise, for the 2nd fraction, since 75 × 14 = 1050,
    9/75 = 9 × 14/75 × 14 = 126/1050
  4. Add the two fractions:
    315/1050 + 126/1050 = 315 + 126/1050 = 441/1050
  5. 441/1050 simplified gives 21/50
  6. So, 21/70 + 9/75 = 21/50

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