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Add 54/21 and 90/10

1st number: 2 12/21, 2nd number: 9 0/10

54/21 + 90/10 is 81/7.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 10 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 21 × 10 = 210,
    54/21 = 54 × 10/21 × 10 = 540/210
  3. Likewise, for the 2nd fraction, since 10 × 21 = 210,
    90/10 = 90 × 21/10 × 21 = 1890/210
  4. Add the two like fractions:
    540/210 + 1890/210 = 540 + 1890/210 = 2430/210
  5. 2430/210 simplified gives 81/7
  6. So, 54/21 + 90/10 = 81/7
    In mixed form: 114/7

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