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Add 18/35 and 90/20

1st number: 18/35, 2nd number: 4 10/20

18/35 + 90/20 is 351/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 35 and 20 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 35 × 4 = 140,
    18/35 = 18 × 4/35 × 4 = 72/140
  3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
    90/20 = 90 × 7/20 × 7 = 630/140
  4. Add the two like fractions:
    72/140 + 630/140 = 72 + 630/140 = 702/140
  5. 702/140 simplified gives 351/70
  6. So, 18/35 + 90/20 = 351/70
    In mixed form: 51/70

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