Example

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

Question

$$12\times9\cdot1\times10^{-31}\times10\times1\cdot6\times10^{-19}; 1.6\times10^{-19}\times10^{-4}$$

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