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Add 30/4 and 18/21

1st number: 7 2/4, 2nd number: 18/21

30/4 + 18/21 is 117/14.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 21 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 4 × 21 = 84,
    30/4 = 30 × 21/4 × 21 = 630/84
  3. Likewise, for the 2nd fraction, since 21 × 4 = 84,
    18/21 = 18 × 4/21 × 4 = 72/84
  4. Add the two like fractions:
    630/84 + 72/84 = 630 + 72/84 = 702/84
  5. 702/84 simplified gives 117/14
  6. So, 30/4 + 18/21 = 117/14
    In mixed form: 85/14

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