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Add 18/70 and 42/48

18/70 + 42/48 is 317/280.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 48 is 1680

    Next, find the equivalent fraction of both fractional numbers with denominator 1680
  2. For the 1st fraction, since 70 × 24 = 1680,
    18/70 = 18 × 24/70 × 24 = 432/1680
  3. Likewise, for the 2nd fraction, since 48 × 35 = 1680,
    42/48 = 42 × 35/48 × 35 = 1470/1680
  4. Add the two like fractions:
    432/1680 + 1470/1680 = 432 + 1470/1680 = 1902/1680
  5. 1902/1680 simplified gives 317/280
  6. So, 18/70 + 42/48 = 317/280
    In mixed form: 137/280

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