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Add 12/90 and 15/40

12/90 + 15/40 is 61/120.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 90 × 4 = 360,
    12/90 = 12 × 4/90 × 4 = 48/360
  3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
    15/40 = 15 × 9/40 × 9 = 135/360
  4. Add the two like fractions:
    48/360 + 135/360 = 48 + 135/360 = 183/360
  5. 183/360 simplified gives 61/120
  6. So, 12/90 + 15/40 = 61/120

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