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Add 4/45 and 21/72

4/45 + 21/72 is 137/360.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 72 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 45 × 8 = 360,
    4/45 = 4 × 8/45 × 8 = 32/360
  3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
    21/72 = 21 × 5/72 × 5 = 105/360
  4. Add the two like fractions:
    32/360 + 105/360 = 32 + 105/360 = 137/360
  5. So, 4/45 + 21/72 = 137/360

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