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Add 21/30 and 54/70

21/30 + 54/70 is 103/70.

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,
    54/70 = 54 × 3/70 × 3 = 162/210
  4. Add the two like fractions:
    147/210 + 162/210 = 147 + 162/210 = 309/210
  5. 309/210 simplified gives 103/70
  6. So, 21/30 + 54/70 = 103/70
    In mixed form: 133/70

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