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Add 21/45 and 20/18

1st number: 21/45, 2nd number: 1 2/18

21/45 + 20/18 is 71/45.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 18 is 90
  2. For the 1st fraction, since 45 × 2 = 90,
    21/45 = 21 × 2/45 × 2 = 42/90
  3. Likewise, for the 2nd fraction, since 18 × 5 = 90,
    20/18 = 20 × 5/18 × 5 = 100/90
  4. Add the two fractions:
    42/90 + 100/90 = 42 + 100/90 = 142/90
  5. 142/90 simplified gives 71/45
  6. So, 21/45 + 20/18 = 71/45
    In mixed form: 126/45

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