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Add 70/21 and 21/49

1st number: 3 7/21, 2nd number: 21/49

70/21 + 21/49 is 79/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 49 is 147
  2. For the 1st fraction, since 21 × 7 = 147,
    70/21 = 70 × 7/21 × 7 = 490/147
  3. Likewise, for the 2nd fraction, since 49 × 3 = 147,
    21/49 = 21 × 3/49 × 3 = 63/147
  4. Add the two fractions:
    490/147 + 63/147 = 490 + 63/147 = 553/147
  5. 553/147 simplified gives 79/21
  6. So, 70/21 + 21/49 = 79/21
    In mixed form: 316/21

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