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Add 42/40 and 9/84

1st number: 1 2/40, 2nd number: 9/84

42/40 + 9/84 is 81/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 84 is 840

    Next, find the equivalent fraction of both fractional numbers with denominator 840
  2. For the 1st fraction, since 40 × 21 = 840,
    42/40 = 42 × 21/40 × 21 = 882/840
  3. Likewise, for the 2nd fraction, since 84 × 10 = 840,
    9/84 = 9 × 10/84 × 10 = 90/840
  4. Add the two like fractions:
    882/840 + 90/840 = 882 + 90/840 = 972/840
  5. 972/840 simplified gives 81/70
  6. So, 42/40 + 9/84 = 81/70
    In mixed form: 111/70

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