Math  /  Algebra

Question11 \leftarrow Suppose a is to b as c is to d ; that is, ab=cd\frac{a}{b}=\frac{c}{d}. Complete parts a through dd below. (a) Beginning with ab=cd\frac{a}{b}=\frac{c}{d}, show that bb is to aa as dd is to cc. What is the first step? A. Cross multiply. B. Add ba\frac{b}{a} to the left side and dc\frac{d}{c} to the right side. C. Subtract bb from the left side and dd from the right side. D. Subtract ba\frac{b}{a} from the left side and dc\frac{d}{c} from the right side.

Studdy Solution
We've successfully shown that if ab=cd\frac{a}{b} = \frac{c}{d}, then ba=dc\frac{b}{a} = \frac{d}{c}.
None of the given options describe the correct first step, which is to take the reciprocal of both sides of the equation.

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