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Add 8/5 and 21/45

1st number: 1 3/5, 2nd number: 21/45

8/5 + 21/45 is 31/15.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 45 is 45

    Next, find the equivalent fraction of both fractional numbers with denominator 45
  2. For the 1st fraction, since 5 × 9 = 45,
    8/5 = 8 × 9/5 × 9 = 72/45
  3. Likewise, for the 2nd fraction, since 45 × 1 = 45,
    21/45 = 21 × 1/45 × 1 = 21/45
  4. Add the two like fractions:
    72/45 + 21/45 = 72 + 21/45 = 93/45
  5. 93/45 simplified gives 31/15
  6. So, 8/5 + 21/45 = 31/15
    In mixed form: 21/15

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