Example

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

Question

$$\frac{1}{6\times10}+\frac{1}{4\times10}-\frac{1}{6\times4}=\vec{m}$$

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