Example

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

Question

$$\frac { a } { b } \frac { 8 a + 5 b } { 8 a - 5 b } = \frac { 7 } { 3 }$$

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