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Add 21/90 and 40/10

1st number: 21/90, 2nd number: 4 0/10

21/90 + 40/10 is 127/30.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 10 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 90 × 1 = 90,
    21/90 = 21 × 1/90 × 1 = 21/90
  3. Likewise, for the 2nd fraction, since 10 × 9 = 90,
    40/10 = 40 × 9/10 × 9 = 360/90
  4. Add the two like fractions:
    21/90 + 360/90 = 21 + 360/90 = 381/90
  5. 381/90 simplified gives 127/30
  6. So, 21/90 + 40/10 = 127/30
    In mixed form: 47/30

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