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Add 1/7 and 21/45

1/7 + 21/45 is 64/105.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 45 is 315
  2. For the 1st fraction, since 7 × 45 = 315,
    1/7 = 1 × 45/7 × 45 = 45/315
  3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
    21/45 = 21 × 7/45 × 7 = 147/315
  4. Add the two fractions:
    45/315 + 147/315 = 45 + 147/315 = 192/315
  5. After reducing the fraction, the answer is 64/105

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