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Add 18/72 and 15/70

18/72 + 15/70 is 13/28.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 72 and 70 is 2520

    Next, find the equivalent fraction of both fractional numbers with denominator 2520
  2. For the 1st fraction, since 72 × 35 = 2520,
    18/72 = 18 × 35/72 × 35 = 630/2520
  3. Likewise, for the 2nd fraction, since 70 × 36 = 2520,
    15/70 = 15 × 36/70 × 36 = 540/2520
  4. Add the two like fractions:
    630/2520 + 540/2520 = 630 + 540/2520 = 1170/2520
  5. 1170/2520 simplified gives 13/28
  6. So, 18/72 + 15/70 = 13/28

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