Example

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

Question

$$\frac { t } { t + 4 } + \frac { t + 1 } { 2 t } = \frac { - 1 - t } { 1 }$$

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