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Add 64/90 and 90/70

1st number: 64/90, 2nd number: 1 20/70

64/90 + 90/70 is 629/315.

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,
    64/90 = 64 × 7/90 × 7 = 448/630
  3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
    90/70 = 90 × 9/70 × 9 = 810/630
  4. Add the two like fractions:
    448/630 + 810/630 = 448 + 810/630 = 1258/630
  5. 1258/630 simplified gives 629/315
  6. So, 64/90 + 90/70 = 629/315
    In mixed form: 1314/315

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