Example

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

Question

$$\frac{ 4 }{ b } =-1$$

Answer

b=-4

Solution


Multiply both sides by \(b\).
\[4=-b\]
Multiply both sides by \(-1\).
\[-4=b\]
Switch sides.
\[b=-4\]
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