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Add 21/4 and 20/45

1st number: 5 1/4, 2nd number: 20/45

21/4 + 20/45 is 205/36.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 45 is 180
  2. For the 1st fraction, since 4 × 45 = 180,
    21/4 = 21 × 45/4 × 45 = 945/180
  3. Likewise, for the 2nd fraction, since 45 × 4 = 180,
    20/45 = 20 × 4/45 × 4 = 80/180
  4. Add the two fractions:
    945/180 + 80/180 = 945 + 80/180 = 1025/180
  5. After reducing the fraction, the answer is 205/36
  6. In mixed form: 525/36

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