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Add 1/42 and 40/45

1/42 + 40/45 is 115/126.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 45 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 42 × 15 = 630,
    1/42 = 1 × 15/42 × 15 = 15/630
  3. Likewise, for the 2nd fraction, since 45 × 14 = 630,
    40/45 = 40 × 14/45 × 14 = 560/630
  4. Add the two like fractions:
    15/630 + 560/630 = 15 + 560/630 = 575/630
  5. 575/630 simplified gives 115/126
  6. So, 1/42 + 40/45 = 115/126

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