Example

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

Question

$$\frac{3}{7}\times\frac{-2}{5}-\frac{3}{14}\frac{-3}{7}\times\frac{6}{5}$$

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