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Add 30/90 and 90/8

1st number: 30/90, 2nd number: 11 2/8

30/90 + 90/8 is 139/12.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 8 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 90 × 4 = 360,
    30/90 = 30 × 4/90 × 4 = 120/360
  3. Likewise, for the 2nd fraction, since 8 × 45 = 360,
    90/8 = 90 × 45/8 × 45 = 4050/360
  4. Add the two like fractions:
    120/360 + 4050/360 = 120 + 4050/360 = 4170/360
  5. 4170/360 simplified gives 139/12
  6. So, 30/90 + 90/8 = 139/12
    In mixed form: 117/12

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