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Add 18/28 and 15/72

18/28 + 15/72 is 143/168.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 72 is 504

    Next, find the equivalent fraction of both fractional numbers with denominator 504
  2. For the 1st fraction, since 28 × 18 = 504,
    18/28 = 18 × 18/28 × 18 = 324/504
  3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
    15/72 = 15 × 7/72 × 7 = 105/504
  4. Add the two like fractions:
    324/504 + 105/504 = 324 + 105/504 = 429/504
  5. 429/504 simplified gives 143/168
  6. So, 18/28 + 15/72 = 143/168

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