Example

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

Question

$$\frac{4}{5}+\frac{5}{4}; \frac{5}{6}+\frac{2}{3}; \frac{8}{14}+\frac{1}{6}$$

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