Example

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

Question

$$2 \frac{ 1 }{ 2 } \times 1 \frac{ 3 }{ 5 } -2 \frac{ 2 }{ 15 } \div 1 \frac{ 1 }{ 15 }$$

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