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Add 25/18 and 72/40

1st number: 1 7/18, 2nd number: 1 32/40

25/18 + 72/40 is 287/90.

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,
    25/18 = 25 × 20/18 × 20 = 500/360
  3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
    72/40 = 72 × 9/40 × 9 = 648/360
  4. Add the two like fractions:
    500/360 + 648/360 = 500 + 648/360 = 1148/360
  5. 1148/360 simplified gives 287/90
  6. So, 25/18 + 72/40 = 287/90
    In mixed form: 317/90

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