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Add 1/40 and 21/7

1st number: 1/40, 2nd number: 3 0/7

1/40 + 21/7 is 121/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 7 is 280

    Next, find the equivalent fraction of both fractional numbers with denominator 280
  2. For the 1st fraction, since 40 × 7 = 280,
    1/40 = 1 × 7/40 × 7 = 7/280
  3. Likewise, for the 2nd fraction, since 7 × 40 = 280,
    21/7 = 21 × 40/7 × 40 = 840/280
  4. Add the two like fractions:
    7/280 + 840/280 = 7 + 840/280 = 847/280
  5. 847/280 simplified gives 121/40
  6. So, 1/40 + 21/7 = 121/40
    In mixed form: 31/40

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