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Add 90/70 and 45/40

1st number: 1 20/70, 2nd number: 1 5/40

90/70 + 45/40 is 135/56.

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,
    45/40 = 45 × 7/40 × 7 = 315/280
  4. Add the two fractions:
    360/280 + 315/280 = 360 + 315/280 = 675/280
  5. 675/280 simplified gives 135/56
  6. So, 90/70 + 45/40 = 135/56
    In mixed form: 223/56

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