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Add 25/40 and 42/45

25/40 + 42/45 is 187/120.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 45 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 40 × 9 = 360,
    25/40 = 25 × 9/40 × 9 = 225/360
  3. Likewise, for the 2nd fraction, since 45 × 8 = 360,
    42/45 = 42 × 8/45 × 8 = 336/360
  4. Add the two like fractions:
    225/360 + 336/360 = 225 + 336/360 = 561/360
  5. 561/360 simplified gives 187/120
  6. So, 25/40 + 42/45 = 187/120
    In mixed form: 167/120

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