Example

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

Question

$$\frac { - 1 } { \frac { 5 } { 4 } + ( \frac { - 14 } { 4 } ) }$$

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