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Add 40/56 and 42/90

40/56 + 42/90 is 124/105.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 56 and 90 is 2520

    Next, find the equivalent fraction of both fractional numbers with denominator 2520
  2. For the 1st fraction, since 56 × 45 = 2520,
    40/56 = 40 × 45/56 × 45 = 1800/2520
  3. Likewise, for the 2nd fraction, since 90 × 28 = 2520,
    42/90 = 42 × 28/90 × 28 = 1176/2520
  4. Add the two like fractions:
    1800/2520 + 1176/2520 = 1800 + 1176/2520 = 2976/2520
  5. 2976/2520 simplified gives 124/105
  6. So, 40/56 + 42/90 = 124/105
    In mixed form: 119/105

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