Example

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

Question

$$\frac { x ( 3 k - 1 ) - 2 k + 1 } { 7 k - 2 } = \frac { 1 } { 2 }$$

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