Example

3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b

Question

$$v ^ { - r } = \frac { 1 } { v ^ { r } } = \frac { 1 } { r q }$$

Evaluate

$\frac{1}{v^{r}}=\frac{1}{qr}$

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