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Add 90/20 and 1/28

1st number: 4 10/20, 2nd number: 1/28

90/20 + 1/28 is 127/28.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 28 is 140
  2. For the 1st fraction, since 20 × 7 = 140,
    90/20 = 90 × 7/20 × 7 = 630/140
  3. Likewise, for the 2nd fraction, since 28 × 5 = 140,
    1/28 = 1 × 5/28 × 5 = 5/140
  4. Add the two fractions:
    630/140 + 5/140 = 630 + 5/140 = 635/140
  5. After reducing the fraction, the answer is 127/28
  6. In mixed form: 415/28

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