Example

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

Question

$$30 \times \frac{ 50 }{ 100 } +V- \frac{ 80 }{ 100 } =(30+V)- \frac{ 60 }{ 100 }$$

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