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Add 21/90 and 90/54

1st number: 21/90, 2nd number: 1 36/54

21/90 + 90/54 is 19/10.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 54 is 270
  2. For the 1st fraction, since 90 × 3 = 270,
    21/90 = 21 × 3/90 × 3 = 63/270
  3. Likewise, for the 2nd fraction, since 54 × 5 = 270,
    90/54 = 90 × 5/54 × 5 = 450/270
  4. Add the two fractions:
    63/270 + 450/270 = 63 + 450/270 = 513/270
  5. After reducing the fraction, the answer is 19/10
  6. In mixed form: 19/10

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