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Add 90/45 and 21/70

1st number: 2 0/45, 2nd number: 21/70

90/45 + 21/70 is 23/10.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 70 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 45 × 14 = 630,
    90/45 = 90 × 14/45 × 14 = 1260/630
  3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
    21/70 = 21 × 9/70 × 9 = 189/630
  4. Add the two like fractions:
    1260/630 + 189/630 = 1260 + 189/630 = 1449/630
  5. 1449/630 simplified gives 23/10
  6. So, 90/45 + 21/70 = 23/10
    In mixed form: 23/10

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