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Add 90/80 and 21/36

1st number: 1 10/80, 2nd number: 21/36

90/80 + 21/36 is 41/24.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 36 is 720

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 80 × 9 = 720,
    90/80 = 90 × 9/80 × 9 = 810/720
  3. Likewise, for the 2nd fraction, since 36 × 20 = 720,
    21/36 = 21 × 20/36 × 20 = 420/720
  4. Add the two like fractions:
    810/720 + 420/720 = 810 + 420/720 = 1230/720
  5. 1230/720 simplified gives 41/24
  6. So, 90/80 + 21/36 = 41/24
    In mixed form: 117/24

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