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Add 40/21 and 42/20

1st number: 1 19/21, 2nd number: 2 2/20

40/21 + 42/20 is 841/210.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 20 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 21 × 20 = 420,
    40/21 = 40 × 20/21 × 20 = 800/420
  3. Likewise, for the 2nd fraction, since 20 × 21 = 420,
    42/20 = 42 × 21/20 × 21 = 882/420
  4. Add the two like fractions:
    800/420 + 882/420 = 800 + 882/420 = 1682/420
  5. 1682/420 simplified gives 841/210
  6. So, 40/21 + 42/20 = 841/210
    In mixed form: 41/210

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