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Add 54/56 and 42/90

54/56 + 42/90 is 601/420.

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,
    54/56 = 54 × 45/56 × 45 = 2430/2520
  3. Likewise, for the 2nd fraction, since 90 × 28 = 2520,
    42/90 = 42 × 28/90 × 28 = 1176/2520
  4. Add the two like fractions:
    2430/2520 + 1176/2520 = 2430 + 1176/2520 = 3606/2520
  5. 3606/2520 simplified gives 601/420
  6. So, 54/56 + 42/90 = 601/420
    In mixed form: 1181/420

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