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Add 10/21 and 40/49

10/21 + 40/49 is 190/147.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 49 is 147

    Next, find the equivalent fraction of both fractional numbers with denominator 147
  2. For the 1st fraction, since 21 × 7 = 147,
    10/21 = 10 × 7/21 × 7 = 70/147
  3. Likewise, for the 2nd fraction, since 49 × 3 = 147,
    40/49 = 40 × 3/49 × 3 = 120/147
  4. Add the two like fractions:
    70/147 + 120/147 = 70 + 120/147 = 190/147
  5. So, 10/21 + 40/49 = 190/147
    In mixed form: 143/147

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