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Add 21/28 and 90/35

1st number: 21/28, 2nd number: 2 20/35

21/28 + 90/35 is 93/28.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 35 is 140
  2. For the 1st fraction, since 28 × 5 = 140,
    21/28 = 21 × 5/28 × 5 = 105/140
  3. Likewise, for the 2nd fraction, since 35 × 4 = 140,
    90/35 = 90 × 4/35 × 4 = 360/140
  4. Add the two fractions:
    105/140 + 360/140 = 105 + 360/140 = 465/140
  5. 465/140 simplified gives 93/28
  6. So, 21/28 + 90/35 = 93/28
    In mixed form: 39/28

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