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Add 42/18 and 21/10

1st number: 2 6/18, 2nd number: 2 1/10

42/18 + 21/10 is 133/30.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 10 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 18 × 5 = 90,
    42/18 = 42 × 5/18 × 5 = 210/90
  3. Likewise, for the 2nd fraction, since 10 × 9 = 90,
    21/10 = 21 × 9/10 × 9 = 189/90
  4. Add the two like fractions:
    210/90 + 189/90 = 210 + 189/90 = 399/90
  5. 399/90 simplified gives 133/30
  6. So, 42/18 + 21/10 = 133/30
    In mixed form: 413/30

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