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Add 90/70 and 27/40

1st number: 1 20/70, 2nd number: 27/40

90/70 + 27/40 is 549/280.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 40 is 280
  2. For the 1st fraction, since 70 × 4 = 280,
    90/70 = 90 × 4/70 × 4 = 360/280
  3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
    27/40 = 27 × 7/40 × 7 = 189/280
  4. Add the two fractions:
    360/280 + 189/280 = 360 + 189/280 = 549/280
  5. So, 90/70 + 27/40 = 549/280
    In mixed form: 1269/280

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