Example

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

Question

$$\frac{ { 7 }^{ 2 } }{ { 377 }^{ 2 } / { 7 }^{ 2 } /7777777777777 }$$

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