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Add 5/8 and 21/45

5/8 + 21/45 is 131/120.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 45 is 360
  2. For the 1st fraction, since 8 × 45 = 360,
    5/8 = 5 × 45/8 × 45 = 225/360
  3. Likewise, for the 2nd fraction, since 45 × 8 = 360,
    21/45 = 21 × 8/45 × 8 = 168/360
  4. Add the two fractions:
    225/360 + 168/360 = 225 + 168/360 = 393/360
  5. 393/360 simplified gives 131/120
  6. So, 5/8 + 21/45 = 131/120
    In mixed form: 111/120

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