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Add 24/21 and 42/90

1st number: 1 3/21, 2nd number: 42/90

24/21 + 42/90 is 169/105.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 90 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 21 × 30 = 630,
    24/21 = 24 × 30/21 × 30 = 720/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    42/90 = 42 × 7/90 × 7 = 294/630
  4. Add the two like fractions:
    720/630 + 294/630 = 720 + 294/630 = 1014/630
  5. 1014/630 simplified gives 169/105
  6. So, 24/21 + 42/90 = 169/105
    In mixed form: 164/105

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