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Add 7/4 and 7/20

1st number: 1 3/4, 2nd number: 7/20

7/4 + 7/20 is 21/10.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 20 is 20

    Next, find the equivalent fraction of both fractional numbers with denominator 20
  2. For the 1st fraction, since 4 × 5 = 20,
    7/4 = 7 × 5/4 × 5 = 35/20
  3. Likewise, for the 2nd fraction, since 20 × 1 = 20,
    7/20 = 7 × 1/20 × 1 = 7/20
  4. Add the two like fractions:
    35/20 + 7/20 = 35 + 7/20 = 42/20
  5. 42/20 simplified gives 21/10
  6. So, 7/4 + 7/20 = 21/10
    In mixed form: 21/10

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