Example

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

Question

$$= \frac { 15500 \times 28 \times 28 \times 28 } { 25 \times 25 \times 25 }$$

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