Nick wants to write a fraction multiplication problem as an addition problem. What way can show the correct way Nick can do this work?

1 answer

To convert a fraction multiplication problem into an addition problem, Nick can use the property of logarithms or the concept of finding a common denominator, but the most straightforward approach might involve using the concept of fractions and how they can be transformed into equivalent expressions.

For instance, if Nick has a multiplication problem like \( \frac{a}{b} \times \frac{c}{d} \), he can rewrite this using the addition of logs:

  1. First, he can express each fraction in terms of addition of fractions: \[ \frac{a}{b} = a \cdot \frac{1}{b}, \quad \text{and so on.} \]
  2. Next, he can express the multiplication as follows: \[ \frac{a}{b} \times \frac{c}{d} = \frac{ac}{bd} = a \cdot \frac{c}{d(b)}. \]

However, a more common and practical way you might see this done in everyday mathematical understanding is to multiply fractions using summation of exponents when the fractions have common bases, although this is not typical for all scenarios.

If you want a simple arithmetic trick, Nick can simply state that multiplying two fractions is the same as adding their logarithms (if using logarithms):

For example: \[ \log \left( \frac{a}{b} \times \frac{c}{d} \right) = \log ( \frac{a}{b}) + \log ( \frac{c}{d} ) \]

Thus, in a practical sense, while multiplication itself cannot directly be translated into addition without additional contextual frameworks (like logarithms), one could illustrate fraction manipulation such as:

  • \( \frac{1}{2} \times \frac{1}{3} \) can be presented as parts of whole then manipulated or evaluated using addition if they are parts of a solution set.

If you clarify Nick’s intention (like a teaching method or mathematical concept), I could provide more targeted advice!