Example

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

Question

$$(\frac{2}{7})^{-5}\times(\frac{2}{7})^{m}=(\frac{2}{7})^{6}$$

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