Example

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

Question

$$\frac{1}{4}\cdot(\frac{-2}{3})+\frac{1}{4}\cdot\frac{3}{3}+\frac{1}{4}\cdot\frac{1}{3}$$

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