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Add 84/21 and 4/90

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

84/21 + 4/90 is 182/45.

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,
    84/21 = 84 × 30/21 × 30 = 2520/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    4/90 = 4 × 7/90 × 7 = 28/630
  4. Add the two like fractions:
    2520/630 + 28/630 = 2520 + 28/630 = 2548/630
  5. 2548/630 simplified gives 182/45
  6. So, 84/21 + 4/90 = 182/45
    In mixed form: 42/45

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