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Multiply 18/4 with 21/45

1st number: 4 2/4, 2nd number: 21/45

This multiplication involving fractions can also be rephrased as "What is 18/4 of 21/45?"

18/4 × 21/45 is 21/10.

Steps for multiplying fractions

  1. Simply multiply the numerators and denominators separately:
  2. 18/4 × 21/45 = 18 × 21/4 × 45 = 378/180
  3. After reducing the fraction, the answer is 21/10
  4. In mixed form: 21/10

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