Example

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

Question

$$\frac{ x }{ 7 } + \frac{ y }{ 3 } =5, \frac{ x }{ 2 } - \frac{ y }{ 9 } =6$$

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