Example

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

Question

$$14 \times 3 \div 7 \times 2-8 \times 2 \div 4-2+3 \times 4 \times 2$$

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