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Add 18/4 and 90/7

1st number: 4 2/4, 2nd number: 12 6/7

18/4 + 90/7 is 243/14.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 7 is 28

    Next, find the equivalent fraction of both fractional numbers with denominator 28
  2. For the 1st fraction, since 4 × 7 = 28,
    18/4 = 18 × 7/4 × 7 = 126/28
  3. Likewise, for the 2nd fraction, since 7 × 4 = 28,
    90/7 = 90 × 4/7 × 4 = 360/28
  4. Add the two like fractions:
    126/28 + 360/28 = 126 + 360/28 = 486/28
  5. 486/28 simplified gives 243/14
  6. So, 18/4 + 90/7 = 243/14
    In mixed form: 175/14

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