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Add 30/42 and 7/10

30/42 + 7/10 is 99/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 10 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 42 × 5 = 210,
    30/42 = 30 × 5/42 × 5 = 150/210
  3. Likewise, for the 2nd fraction, since 10 × 21 = 210,
    7/10 = 7 × 21/10 × 21 = 147/210
  4. Add the two like fractions:
    150/210 + 147/210 = 150 + 147/210 = 297/210
  5. 297/210 simplified gives 99/70
  6. So, 30/42 + 7/10 = 99/70
    In mixed form: 129/70

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