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Add 42/21 and 12/30

1st number: 2 0/21, 2nd number: 12/30

42/21 + 12/30 is 12/5.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 30 is 210
  2. For the 1st fraction, since 21 × 10 = 210,
    42/21 = 42 × 10/21 × 10 = 420/210
  3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
    12/30 = 12 × 7/30 × 7 = 84/210
  4. Add the two fractions:
    420/210 + 84/210 = 420 + 84/210 = 504/210
  5. 504/210 simplified gives 12/5
  6. So, 42/21 + 12/30 = 12/5
    In mixed form: 22/5

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