This mathematics problem involves applying core mathematical principles and formulas. Below you will find a complete step-by-step solution with detailed explanations for each step, helping you understand not just the answer but the method behind it.

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Here's how to solve the expression using cross-cancellation:
Step 1: Write the given expression.
Step 2: Perform cross-cancellation to simplify the fractions before multiplying. • The in the denominator of the first fraction and the in the numerator of the third fraction cancel each other out. • The in the numerator of the first fraction and the in the denominator of the third fraction can be simplified. Divide both by : and . • The in the numerator of the second fraction and the in its denominator can be simplified. Divide both by : and .
Step 3: Rewrite the expression with the simplified terms.
Step 4: Multiply the numerators together and the denominators together.
The final answer is .
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Here's how to solve the expression using cross-cancellation: Step 1: Write the given expression.
This mathematics problem involves applying core mathematical principles and formulas. Below you will find a complete step-by-step solution with detailed explanations for each step, helping you understand not just the answer but the method behind it.