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Add 21/8 and 15/30

1st number: 2 5/8, 2nd number: 15/30

21/8 + 15/30 is 25/8.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 30 is 120

    Next, find the equivalent fraction of both fractional numbers with denominator 120
  2. For the 1st fraction, since 8 × 15 = 120,
    21/8 = 21 × 15/8 × 15 = 315/120
  3. Likewise, for the 2nd fraction, since 30 × 4 = 120,
    15/30 = 15 × 4/30 × 4 = 60/120
  4. Add the two like fractions:
    315/120 + 60/120 = 315 + 60/120 = 375/120
  5. 375/120 simplified gives 25/8
  6. So, 21/8 + 15/30 = 25/8
    In mixed form: 31/8

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