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Add 90/45 and 70/20

1st number: 2 0/45, 2nd number: 3 10/20

90/45 + 70/20 is 11/2.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 20 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 45 × 4 = 180,
    90/45 = 90 × 4/45 × 4 = 360/180
  3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
    70/20 = 70 × 9/20 × 9 = 630/180
  4. Add the two like fractions:
    360/180 + 630/180 = 360 + 630/180 = 990/180
  5. 990/180 simplified gives 11/2
  6. So, 90/45 + 70/20 = 11/2
    In mixed form: 51/2

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