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Add 18/90 and 15/64

18/90 + 15/64 is 139/320.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 64 is 2880

    Next, find the equivalent fraction of both fractional numbers with denominator 2880
  2. For the 1st fraction, since 90 × 32 = 2880,
    18/90 = 18 × 32/90 × 32 = 576/2880
  3. Likewise, for the 2nd fraction, since 64 × 45 = 2880,
    15/64 = 15 × 45/64 × 45 = 675/2880
  4. Add the two like fractions:
    576/2880 + 675/2880 = 576 + 675/2880 = 1251/2880
  5. 1251/2880 simplified gives 139/320
  6. So, 18/90 + 15/64 = 139/320

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