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Add 36/80 and 21/90

36/80 + 21/90 is 41/60.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 90 is 720
  2. For the 1st fraction, since 80 × 9 = 720,
    36/80 = 36 × 9/80 × 9 = 324/720
  3. Likewise, for the 2nd fraction, since 90 × 8 = 720,
    21/90 = 21 × 8/90 × 8 = 168/720
  4. Add the two fractions:
    324/720 + 168/720 = 324 + 168/720 = 492/720
  5. After reducing the fraction, the answer is 41/60

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