Example

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

Question

$$f=f \pm f$$

Answer

f=0

Solution


Cancel \(f\) on both sides.
\[0=-f\]
Multiply both sides by \(-1\).
\[0=f\]
Switch sides.
\[f=0\]
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