Example

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

Question

$$\sqrt[k]{\frac{49^{K+\frac{1}{4}}\sqrt{7.7^{-K}}}{7\sqrt{7^{-K}}}=x.$$

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