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Add 21/18 and 98/40

1st number: 1 3/18, 2nd number: 2 18/40

21/18 + 98/40 is 217/60.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 40 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 18 × 20 = 360,
    21/18 = 21 × 20/18 × 20 = 420/360
  3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
    98/40 = 98 × 9/40 × 9 = 882/360
  4. Add the two like fractions:
    420/360 + 882/360 = 420 + 882/360 = 1302/360
  5. 1302/360 simplified gives 217/60
  6. So, 21/18 + 98/40 = 217/60
    In mixed form: 337/60

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