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Add 90/54 and 40/21

1st number: 1 36/54, 2nd number: 1 19/21

90/54 + 40/21 is 25/7.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 54 and 21 is 378

    Next, find the equivalent fraction of both fractional numbers with denominator 378
  2. For the 1st fraction, since 54 × 7 = 378,
    90/54 = 90 × 7/54 × 7 = 630/378
  3. Likewise, for the 2nd fraction, since 21 × 18 = 378,
    40/21 = 40 × 18/21 × 18 = 720/378
  4. Add the two like fractions:
    630/378 + 720/378 = 630 + 720/378 = 1350/378
  5. 1350/378 simplified gives 25/7
  6. So, 90/54 + 40/21 = 25/7
    In mixed form: 34/7

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