Example

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

Question

$$11 \frac{ 2 }{ 5 } \times \frac{ 4 }{ 9 } \div \frac{ 6 }{ 45 } -5$$

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