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Add 21/36 and 30/40

21/36 + 30/40 is 4/3.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 36 and 40 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 36 × 10 = 360,
    21/36 = 21 × 10/36 × 10 = 210/360
  3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
    30/40 = 30 × 9/40 × 9 = 270/360
  4. Add the two like fractions:
    210/360 + 270/360 = 210 + 270/360 = 480/360
  5. 480/360 simplified gives 4/3
  6. So, 21/36 + 30/40 = 4/3
    In mixed form: 11/3

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