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Add 80/21 and 1/30

1st number: 3 17/21, 2nd number: 1/30

80/21 + 1/30 is 269/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 30 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 21 × 10 = 210,
    80/21 = 80 × 10/21 × 10 = 800/210
  3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
    1/30 = 1 × 7/30 × 7 = 7/210
  4. Add the two like fractions:
    800/210 + 7/210 = 800 + 7/210 = 807/210
  5. 807/210 simplified gives 269/70
  6. So, 80/21 + 1/30 = 269/70
    In mixed form: 359/70

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