1.

If $$\frac{a}{b}{\text{ = }}\frac{c}{d}{\text{ = }}\frac{e}{f}{\text{,}}$$then each of them is equal to = ?

A. $\frac{{a + 3c + 5e}}{{b + d - f}}$$
B. $\frac{{3a + 3c - 5e}}{{b + 3d - f}}$$
C. $\frac{{a + c - e}}{{b + d - 5f}}$$
D. $\frac{{a + 3c - 5e}}{{b + 3d - 5f}}$$
Answer» E.


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