Example

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

Question

$$\frac{ ab-bc }{ -b }$$

Answer

c-a

Solution


Factor out the common term \(b\).
\[\frac{b(a-c)}{-b}\]
Move the negative sign to the left.
\[-\frac{b(a-c)}{b}\]
Cancel \(b\).
\[-(a-c)\]
Remove parentheses.
\[-a+c\]
Regroup terms.
\[c-a\]
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