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Add 70/21 and 21/45

1st number: 3 7/21, 2nd number: 21/45

70/21 + 21/45 is 19/5.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 45 is 315
  2. For the 1st fraction, since 21 × 15 = 315,
    70/21 = 70 × 15/21 × 15 = 1050/315
  3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
    21/45 = 21 × 7/45 × 7 = 147/315
  4. Add the two fractions:
    1050/315 + 147/315 = 1050 + 147/315 = 1197/315
  5. After reducing the fraction, the answer is 19/5
  6. In mixed form: 34/5

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