Question

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Answer 1

Since they're similar, all of their sides are will be related to each other by the same fraction.

So we can say\[\frac{16}{12}=\frac{32}{24}=\frac{y+1}{21}=\frac{x-1}{6}\]

Answer 2

Well, if you had \[\frac{16}{12}=\frac{x-1}{6}\]how would you solve for x?

Answer 3

\[\frac{16}{12}=\frac{x-1}{6}\]\[16 \times 6 = (x-1) \times 12\]\[96=12x-12\]\[108=12x\]\[\frac{108}{12}=\frac{12x}{12}\]\[9=x\]

Answer 4

You can use 32/24, or 16/12, or 8/6