Example

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

Question

$$\{ -4- { \left( { 4 }^{ 2 } \right) }^{ { 2 }^{ 2 } 4 }$$

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