Example

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

Question

$$e=\frac{1.521\times10^{8}-1.471\times10^{8}}{1.521\times10^{8}-1.471\times10^{8}}$$

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