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Add 21/30 and 35/70

21/30 + 35/70 is 6/5.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 70 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 30 × 7 = 210,
    21/30 = 21 × 7/30 × 7 = 147/210
  3. Likewise, for the 2nd fraction, since 70 × 3 = 210,
    35/70 = 35 × 3/70 × 3 = 105/210
  4. Add the two like fractions:
    147/210 + 105/210 = 147 + 105/210 = 252/210
  5. 252/210 simplified gives 6/5
  6. So, 21/30 + 35/70 = 6/5
    In mixed form: 11/5

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