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Add 90/70 and 7/90

1st number: 1 20/70, 2nd number: 7/90

90/70 + 7/90 is 859/630.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 90 is 630
  2. For the 1st fraction, since 70 × 9 = 630,
    90/70 = 90 × 9/70 × 9 = 810/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    7/90 = 7 × 7/90 × 7 = 49/630
  4. Add the two fractions:
    810/630 + 49/630 = 810 + 49/630 = 859/630
  5. In mixed form: 1229/630

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