Example

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

Question

$$6.673 \times { 10 }^{ -11 } \times \frac{ 1200 }{ { 4 }^{ 2 } }$$

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