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Add 54/90 and 18/70

54/90 + 18/70 is 6/7.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 70 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 90 × 7 = 630,
    54/90 = 54 × 7/90 × 7 = 378/630
  3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
    18/70 = 18 × 9/70 × 9 = 162/630
  4. Add the two like fractions:
    378/630 + 162/630 = 378 + 162/630 = 540/630
  5. 540/630 simplified gives 6/7
  6. So, 54/90 + 18/70 = 6/7

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