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Add 18/7 and 20/45

1st number: 2 4/7, 2nd number: 20/45

18/7 + 20/45 is 190/63.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 45 is 315

    Next, find the equivalent fraction of both fractional numbers with denominator 315
  2. For the 1st fraction, since 7 × 45 = 315,
    18/7 = 18 × 45/7 × 45 = 810/315
  3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
    20/45 = 20 × 7/45 × 7 = 140/315
  4. Add the two like fractions:
    810/315 + 140/315 = 810 + 140/315 = 950/315
  5. 950/315 simplified gives 190/63
  6. So, 18/7 + 20/45 = 190/63
    In mixed form: 31/63

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