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Add 90/40 and 15/28

1st number: 2 10/40, 2nd number: 15/28

90/40 + 15/28 is 39/14.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 28 is 280
  2. For the 1st fraction, since 40 × 7 = 280,
    90/40 = 90 × 7/40 × 7 = 630/280
  3. Likewise, for the 2nd fraction, since 28 × 10 = 280,
    15/28 = 15 × 10/28 × 10 = 150/280
  4. Add the two fractions:
    630/280 + 150/280 = 630 + 150/280 = 780/280
  5. 780/280 simplified gives 39/14
  6. So, 90/40 + 15/28 = 39/14
    In mixed form: 211/14

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