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Add 54/70 and 70/90

54/70 + 70/90 is 488/315.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 70 × 9 = 630,
    54/70 = 54 × 9/70 × 9 = 486/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    70/90 = 70 × 7/90 × 7 = 490/630
  4. Add the two like fractions:
    486/630 + 490/630 = 486 + 490/630 = 976/630
  5. 976/630 simplified gives 488/315
  6. So, 54/70 + 70/90 = 488/315
    In mixed form: 1173/315

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