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Add 21/16 and 18/30

1st number: 1 5/16, 2nd number: 18/30

21/16 + 18/30 is 153/80.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 16 and 30 is 240

    Next, find the equivalent fraction of both fractional numbers with denominator 240
  2. For the 1st fraction, since 16 × 15 = 240,
    21/16 = 21 × 15/16 × 15 = 315/240
  3. Likewise, for the 2nd fraction, since 30 × 8 = 240,
    18/30 = 18 × 8/30 × 8 = 144/240
  4. Add the two like fractions:
    315/240 + 144/240 = 315 + 144/240 = 459/240
  5. 459/240 simplified gives 153/80
  6. So, 21/16 + 18/30 = 153/80
    In mixed form: 173/80

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