Verified Answer :

Simple,

it's B.

\(\frac{a-b}{b} = \frac{3}{7}\)

That's giving you an example...

\(\frac{a}{b}= \frac{10}{7} it's telling you to plug it in, simple...\)

a=10
and
b=7

\(\frac{10-7}{7} = \frac{3}{7}\)

True, or not true?

Thus, your answer. B.

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