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Add 21/40 and 45/9

1st number: 21/40, 2nd number: 5 0/9

21/40 + 45/9 is 221/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 9 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 40 × 9 = 360,
    21/40 = 21 × 9/40 × 9 = 189/360
  3. Likewise, for the 2nd fraction, since 9 × 40 = 360,
    45/9 = 45 × 40/9 × 40 = 1800/360
  4. Add the two like fractions:
    189/360 + 1800/360 = 189 + 1800/360 = 1989/360
  5. 1989/360 simplified gives 221/40
  6. So, 21/40 + 45/9 = 221/40
    In mixed form: 521/40

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