Example

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

Question

$$\frac { 2 ^ { n } - 2 ^ { n - 1 } } { 2 ^ { n } }$$

Evaluate

$\frac{1}{2}=0.5$

Factor

$\frac{1}{2} = 0.5$

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