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Add 5/21 and 70/40

1st number: 5/21, 2nd number: 1 30/40

5/21 + 70/40 is 167/84.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 40 is 840
  2. For the 1st fraction, since 21 × 40 = 840,
    5/21 = 5 × 40/21 × 40 = 200/840
  3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
    70/40 = 70 × 21/40 × 21 = 1470/840
  4. Add the two fractions:
    200/840 + 1470/840 = 200 + 1470/840 = 1670/840
  5. 1670/840 simplified gives 167/84
  6. So, 5/21 + 70/40 = 167/84
    In mixed form: 183/84

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