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Add 12/40 and 35/90

12/40 + 35/90 is 31/45.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 90 is 360
  2. For the 1st fraction, since 40 × 9 = 360,
    12/40 = 12 × 9/40 × 9 = 108/360
  3. Likewise, for the 2nd fraction, since 90 × 4 = 360,
    35/90 = 35 × 4/90 × 4 = 140/360
  4. Add the two fractions:
    108/360 + 140/360 = 108 + 140/360 = 248/360
  5. 248/360 simplified gives 31/45
  6. So, 12/40 + 35/90 = 31/45

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