Example

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

Question

$$x - 2 y + z , 5 y - 2 x + 2 z , 2 z - 4 x - 3 y , 3 y - 2 z$$

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