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Add 21/90 and 40/50

21/90 + 40/50 is 31/30.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 50 is 450

    Next, find the equivalent fraction of both fractional numbers with denominator 450
  2. For the 1st fraction, since 90 × 5 = 450,
    21/90 = 21 × 5/90 × 5 = 105/450
  3. Likewise, for the 2nd fraction, since 50 × 9 = 450,
    40/50 = 40 × 9/50 × 9 = 360/450
  4. Add the two like fractions:
    105/450 + 360/450 = 105 + 360/450 = 465/450
  5. 465/450 simplified gives 31/30
  6. So, 21/90 + 40/50 = 31/30
    In mixed form: 11/30

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