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Multiply 21/40 with 15/90

This multiplication involving fractions can also be rephrased as "What is 21/40 of 15/90?"

21/40 × 15/90 is 7/80.

Steps for multiplying fractions

  1. Simply multiply the numerators and denominators separately:
  2. 21/40 × 15/90 = 21 × 15/40 × 90 = 315/3600
  3. After reducing the fraction, the answer is 7/80

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