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Add 30/21 and 1/40

1st number: 1 9/21, 2nd number: 1/40

30/21 + 1/40 is 407/280.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 40 is 840

    Next, find the equivalent fraction of both fractional numbers with denominator 840
  2. For the 1st fraction, since 21 × 40 = 840,
    30/21 = 30 × 40/21 × 40 = 1200/840
  3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
    1/40 = 1 × 21/40 × 21 = 21/840
  4. Add the two like fractions:
    1200/840 + 21/840 = 1200 + 21/840 = 1221/840
  5. 1221/840 simplified gives 407/280
  6. So, 30/21 + 1/40 = 407/280
    In mixed form: 1127/280

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