Example

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

Question

$$-2 \frac{ 7 }{ 8 } \leq k < -1 \frac{ 2 }{ 3 }$$

Solve for k

$k\in [-\frac{23}{8},-\frac{5}{3})$

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