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Add 1/40 and 12/90

1/40 + 12/90 is 19/120.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 90 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 40 × 9 = 360,
    1/40 = 1 × 9/40 × 9 = 9/360
  3. Likewise, for the 2nd fraction, since 90 × 4 = 360,
    12/90 = 12 × 4/90 × 4 = 48/360
  4. Add the two like fractions:
    9/360 + 48/360 = 9 + 48/360 = 57/360
  5. 57/360 simplified gives 19/120
  6. So, 1/40 + 12/90 = 19/120

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