Example

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

Question

$$( \frac { 17 } { 11 } ) ^ { 49 } \div ( \frac { 17 } { 11 } ) ^ { 28 }$$

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