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Add 10/9 and 21/40

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

10/9 + 21/40 is 589/360.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 9 and 40 is 360
  2. For the 1st fraction, since 9 × 40 = 360,
    10/9 = 10 × 40/9 × 40 = 400/360
  3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
    21/40 = 21 × 9/40 × 9 = 189/360
  4. Add the two fractions:
    400/360 + 189/360 = 400 + 189/360 = 589/360
  5. So, 10/9 + 21/40 = 589/360
    In mixed form: 1229/360

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