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Add 81/30 and 70/40

1st number: 2 21/30, 2nd number: 1 30/40

81/30 + 70/40 is 89/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 40 is 120
  2. For the 1st fraction, since 30 × 4 = 120,
    81/30 = 81 × 4/30 × 4 = 324/120
  3. Likewise, for the 2nd fraction, since 40 × 3 = 120,
    70/40 = 70 × 3/40 × 3 = 210/120
  4. Add the two fractions:
    324/120 + 210/120 = 324 + 210/120 = 534/120
  5. After reducing the fraction, the answer is 89/20
  6. In mixed form: 49/20

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