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Add 81/18 and 70/40

1st number: 4 9/18, 2nd number: 1 30/40

81/18 + 70/40 is 25/4.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 40 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 18 × 20 = 360,
    81/18 = 81 × 20/18 × 20 = 1620/360
  3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
    70/40 = 70 × 9/40 × 9 = 630/360
  4. Add the two like fractions:
    1620/360 + 630/360 = 1620 + 630/360 = 2250/360
  5. 2250/360 simplified gives 25/4
  6. So, 81/18 + 70/40 = 25/4
    In mixed form: 61/4

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