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Add 21/14 and 28/90

1st number: 1 7/14, 2nd number: 28/90

21/14 + 28/90 is 163/90.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 14 and 90 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 14 × 45 = 630,
    21/14 = 21 × 45/14 × 45 = 945/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    28/90 = 28 × 7/90 × 7 = 196/630
  4. Add the two like fractions:
    945/630 + 196/630 = 945 + 196/630 = 1141/630
  5. 1141/630 simplified gives 163/90
  6. So, 21/14 + 28/90 = 163/90
    In mixed form: 173/90

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