Example

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

Question

$$\frac{ 7 }{ 3 } = \frac{ 14 }{ } e \frac{ 25 }{ 20 } = \frac{ }{ 4 }$$

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