Example

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

Question

$$(\frac{215}{418})^{2}\times(\frac{418}{215})^{2}+\frac{3^{3}\times4^{3}}{12^{3}}\cdot$$

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